Indiana Code 25-30-2: State Police Polygraph Rules

What IC 25-30-2 Establishes

Indiana Code 25-30-2, titled "Regulation of Polygraph Examiners by State Police," is the state's primary statutory framework governing polygraph examiner certification [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. The statute was enacted through P.L.250-1983 and has remained Indiana's core polygraph regulation for over four decades [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. It is codified under Title 25 (Professions and Occupations), Article 30, alongside chapters governing private investigator firms and security guard agency licensing [2]Verified Indiana Code Title 25, Article 30 (2025) — Private Investigator Firms, Security Guards, and Polygraph Examiners
Confirms the current codification of Chapter 2 under Title 25, Article 30 of the Indiana Code.

Unlike approximately 30 states that require mandatory licensure for polygraph examiners [3]Verified Indiana Polygraph Examiner License Requirements (2026)
Confirms Indiana does not require mandatory licensure for polygraph examiners and that APA-accredited training requires 240 hours minimum, Indiana operates under a voluntary certification model [4]Verified APA State Licensing Boards & Associations — Indiana
Confirms Indiana has voluntary certification administered through Indiana Government Center North, Indianapolis. The American Polygraph Association classifies Indiana as having "voluntary certification" administered through the Indiana Government Center North at 100 North Senate Avenue, Room 312, Indianapolis [4]Verified APA State Licensing Boards & Associations — Indiana
Confirms Indiana has voluntary certification administered through Indiana Government Center North, Indianapolis. This voluntary framework means that while certification demonstrates professional competence, it is not an absolute legal prerequisite to conducting polygraph examinations in the state — though title protection provisions create meaningful consequences for uncertified practitioners.

The statute defines three key terms that form the foundation of Indiana's polygraph regulatory framework. "Department" refers specifically to the state police department established under IC 10-11-2-4 [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. A "polygraph examiner" is defined as a person who is solely or partly engaged in the business of establishing the truth or falsity of any statement or representation by means of a polygraph instrument [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. A "polygraph instrument" is defined as a device that permanently and simultaneously records, at a minimum, an individual's cardiovascular and respiratory patterns and galvanic skin responses in order to determine truthfulness [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

The Five Sections of IC 25-30-2

IC 25-30-2 comprises five concise but impactful sections:

Section 1 (IC 25-30-2-1) establishes the statutory definitions for "department," "polygraph examiner," and "polygraph instrument" [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. This section was amended by P.L.2-2003, SEC.67, updating the cross-reference to the state police department's enabling statute [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

Section 2 (IC 25-30-2-2) directs the department to issue certificates of competence and establishes the standards framework [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. This is the operative certification provision of the statute.

Section 3 (IC 25-30-2-3) grants the department authority to revoke certificates when applicant information is found to be false [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

Section 4 (IC 25-30-2-4) provides rulemaking authority, requiring the department to adopt fee schedules and authorizing additional administrative rules [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

Section 5 (IC 25-30-2-5) creates title protection with enforcement penalties for unauthorized use of polygraph examiner titles [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. For those interested in how other states handle polygraph regulation, our guide to Michigan's Polygraph Protection Act of 1981 provides an instructive comparison.

Certificate of Competence Standards

Under IC 25-30-2-2(a), the Indiana State Police Department shall issue a certificate of competence to operate a polygraph instrument to each individual who complies with the standards and procedures established by the department [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. The standards are established by administrative rule adopted under IC 4-22-2, giving them the force of law [5]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms IC 25-30-2-2 certification requirements, Sanchez four-part test, and Hubbard v. State qualifications standard.

The statute authorizes three categories of requirements that the department may include in its certification standards [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties:

1. Evidence demonstrating that the applicant has successfully completed a course of formal training in the use of polygraph instruments [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. 2. Evidence demonstrating the applicant's experience and competence in the operation of polygraph instruments [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. 3. A written examination [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

While the statute uses permissive language ("may include"), in practice the Indiana State Police has implemented comprehensive standards. The Indiana Polygraph Association notes that IC 25-30-2 requires polygraph examiners who are not police officers or federal law enforcement officers to hold a "Certification of Polygraph Examiner" [6]Verified Indiana Polygraph Association — Frequently Asked Questions
Confirms IC 25-30-2 requires certification for non-law-enforcement polygraph examiners and describes testing procedures. APA-accredited training programs require a minimum of 240 hours of instruction covering polygraphy theory and practice, physiology, psychology, instrumentation, chart analysis, testing techniques, ethics, and legal issues [3]Verified Indiana Polygraph Examiner License Requirements (2026)
Confirms Indiana does not require mandatory licensure for polygraph examiners and that APA-accredited training requires 240 hours minimum. For those considering a career in polygraph testing, visit our become a polygraph examiner page for comprehensive guidance.

Indiana State Police Polygraph Examiner Qualifications

The Indiana State Police sets rigorous internal standards for its own polygraph examiners that exceed the statutory minimum requirements. ISP Forensic Scientist III-Polygraph Examiner positions require a baccalaureate degree or higher, with natural science, forensic science, and/or criminal justice classes desired [7]Verified Indiana State Police — Forensic Scientist EVII Polygraph Unit Supervisor Job Listing
Confirms ISP requires baccalaureate degree, three years experience, and FSD-approved interview/interrogation course for polygraph examiner positions. Additionally, candidates must have three years of full-time experience in a polygraph examiner position and must have successfully completed an approved interview/interrogation course [7]Verified Indiana State Police — Forensic Scientist EVII Polygraph Unit Supervisor Job Listing
Confirms ISP requires baccalaureate degree, three years experience, and FSD-approved interview/interrogation course for polygraph examiner positions.

The Indianapolis Metropolitan Police Department (IMPD) similarly requires a Bachelor's degree in Sociology, Criminology, Behavioral Science, or a related field, plus five years of related work experience for its polygraph examiner positions [8]Verified Indianapolis Metropolitan Police Department — Polygraph Examiner Position
Confirms IMPD requires Bachelor's degree, five years experience, and APA certification for polygraph examiners. IMPD also requires certification in polygraph examination through organizations such as the APA and the ability to maintain minimum continuing educational requirements set by the APA [8]Verified Indianapolis Metropolitan Police Department — Polygraph Examiner Position
Confirms IMPD requires Bachelor's degree, five years experience, and APA certification for polygraph examiners.

These institutional requirements demonstrate that Indiana's leading law enforcement agencies voluntarily maintain standards that substantially exceed the baseline statutory framework, reflecting the profession's commitment to excellence. To learn more about hiring a licensed polygraph examiner in Indianapolis, see our dedicated local guide.

Certificate Revocation Under IC 25-30-2-3

Under IC 25-30-2-3, the department may revoke a certificate issued under section 2 if it determines that information given by an applicant was false [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. This provision focuses specifically on fraud during the application process. The revocation authority provides an essential enforcement mechanism to maintain the integrity of the certification system.

Notably, the current statute's revocation grounds are narrower than what was proposed in the 2001 reform bill (IN 1919). That bill would have expanded the bases for denial and revocation to include conviction of a felony, conviction of a misdemeanor directly bearing on the applicant's ability to practice polygraphy, and prior certificate revocation [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion. The proposed bill was never enacted, meaning the original P.L.250-1983 revocation framework remains in effect [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion.

Rulemaking Authority Under IC 25-30-2-4

Section 4 provides dual rulemaking authority. The department shall adopt rules under IC 25-1-8 to establish fees for the administration of the chapter [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. Additionally, the department may adopt rules under IC 4-22-2 to provide any additional administrative provisions it deems necessary [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. This permissive rulemaking power allows the Indiana State Police to adapt its polygraph examiner program without requiring legislative action for every procedural change.

Title Protection Under IC 25-30-2-5

IC 25-30-2-5 creates meaningful title protection for certified polygraph professionals. After December 31, 1983, an individual who has not received a certificate of competence to operate a polygraph instrument may not assume or use the title "professional polygraph examiner," "polygraph examiner," or "polygraph operator" [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties. A person who violates this section commits a Class C infraction [1]Verified Indiana Code § 25-30-2 (2024) — Regulation of Polygraph Examiners by State Police
Confirms the full text of IC 25-30-2 including definitions, certification standards, revocation authority, rulemaking powers, and title protection penalties.

This title protection provision is significant because it applies even though Indiana's overall certification system is voluntary. While an individual may technically conduct polygraph examinations without state certification, they cannot legally represent themselves using any of the three protected professional titles. This creates a practical incentive for certification, as clients, courts, and law enforcement agencies naturally seek examiners who can properly identify themselves with these professional designations.

What the Bill Would Have Changed

In 2001, the Indiana General Assembly introduced IN 1919, which proposed repealing IC 25-30-2 and replacing it with a new chapter, IC 25-30-3 [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion. The bill would have created a dedicated polygraph examiner certification board consisting of the superintendent of the state police department (or designee) and four members appointed by the governor from different geographic regions of Indiana [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion.

The proposed board would have included one polygraph examiner in private practice, one examiner from a municipal police department, one from a county sheriff's department, and one member of the public [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion. This composition was designed to ensure representation from across Indiana's polygraph community.

The new requirements under IN 1919 were substantially more rigorous. Applicants would have been required to be at least 21 years of age and to have successfully completed a course of study in an accredited American Polygraph Association school or an American Association of Police Polygraphists basic polygraph course [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion. The bill also expanded grounds for certificate denial and revocation to include felony convictions, relevant misdemeanor convictions, and prior certificate denials or revocations [9]Verified Indiana General Assembly — IN 1919 (2001) — Polygraph Examiner Certification Bill
Confirms proposed IC 25-30-3 would have repealed IC 25-30-2, created a certification board, and imposed stricter requirements including minimum age 21 and APA school completion.

The bill was never enacted, and IC 25-30-2 remains the governing statute today. However, the proposed reforms reflect the ongoing professional aspiration toward higher certification standards within Indiana's polygraph community.

The Sanchez v. State Four-Part Test

Polygraph admissibility in Indiana courts is governed by a well-established four-part test articulated in Sanchez v. State, 675 N.E.2d 306 (Ind. 1996) [10]Verified Sanchez v. State, 675 N.E.2d 306 (Ind. 1996)
Establishes the four-part prerequisite test for polygraph evidence admissibility in Indiana criminal proceedings. This framework, subsequently affirmed in Davidson v. State (558 N.E.2d 1077) and Jackson v. State (735 N.E.2d 1146), requires that all four prerequisites be satisfied before polygraph evidence may be admitted [5]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms IC 25-30-2-2 certification requirements, Sanchez four-part test, and Hubbard v. State qualifications standard:

1. Written Stipulation Agreement: The prosecutor, defendant, and defense counsel must all sign a written stipulation providing for the defendant's submission to the examination and for the subsequent admission of the results at trial [5]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms IC 25-30-2-2 certification requirements, Sanchez four-part test, and Hubbard v. State qualifications standard. 2. Trial Court Discretion on Qualifications: Even with a stipulation, the admissibility of the test results must be within the trial court's discretion as it relates to the examiner's qualifications and the test conditions [11]Verified MCPO Casebook — Polygraph Evidence in Indiana
Confirms polygraph stipulation is a binding contract under Indiana law (State v. Wroe, 2014), catalogs key polygraph precedents including Sanchez four-part test. 3. Right to Cross-Examination: The opposing party must have the right to cross-examine the polygraph examiner if the graphs and opinion are offered into evidence [11]Verified MCPO Casebook — Polygraph Evidence in Indiana
Confirms polygraph stipulation is a binding contract under Indiana law (State v. Wroe, 2014), catalogs key polygraph precedents including Sanchez four-part test. 4. Jury Instruction Requirement: The jury must be instructed that, at most, the examiner's testimony tends only to show whether the defendant was being truthful at the time of the examination, and that it is for the jury to determine the weight and effect to be given such testimony [11]Verified MCPO Casebook — Polygraph Evidence in Indiana
Confirms polygraph stipulation is a binding contract under Indiana law (State v. Wroe, 2014), catalogs key polygraph precedents including Sanchez four-part test.

For a detailed analysis of this landmark ruling, see our comprehensive guide to Sanchez v. State: Indiana's four polygraph admissibility rules. You can also explore our broader guide on Indiana polygraph admissibility and stipulation rules.

Stipulation as a Binding Contract

Indiana courts treat polygraph stipulations as binding contracts. In State v. Wroe, 16 N.E.3d 462 (Ind. Ct. App. 2014), the court confirmed that a stipulation entered into by a defendant and the State before a polygraph examination is a binding contract governed by contract principles [12]Verified State v. Wroe, 16 N.E.3d 462 (Ind. Ct. App. 2014) — via MCPO Casebook
Confirms polygraph stipulation is a binding contract under Indiana law. This means the terms of the stipulation control its use and interpretation in court proceedings.

The Evansville Police Department reports that approximately 15% of all polygraph examinations it conducts are court-admissible [13]Verified Evansville Police Department — Polygraph Unit
Confirms EPD examiners trained at Backster School, 15% evidentiary standard, and stipulation procedures in Indiana. The decision to offer a suspect a court-admissible polygraph is made by the prosecutor and/or the lead detective of the case, and the polygraph examiner does not become involved until after all forms are signed and finalized [13]Verified Evansville Police Department — Polygraph Unit
Confirms EPD examiners trained at Backster School, 15% evidentiary standard, and stipulation procedures in Indiana.

The 'Opening the Door' Doctrine

Indiana recognizes an exception to the general stipulation requirement through the "opening the door" doctrine. In Willoughby v. State, 552 N.E.2d 462 (Ind. 1990), the court held that once a defendant introduced polygraph evidence during testimony, the defendant waived any objection to the admission of the polygraph results, and the trial court did not err in permitting the State to present polygraph results in rebuttal [14]Verified Willoughby v. State, 552 N.E.2d 462 (Ind. 1990) — via MCPO Casebook
Confirms the 'opening the door' exception allowing polygraph evidence in rebuttal when defendant references polygraph during testimony.

This doctrine creates an important strategic consideration for defendants: references to polygraph examinations during testimony, without a prior stipulation from both parties, can result in the admission of potentially unfavorable polygraph results. As the court noted in a related case, a defendant's own statements about a lie detector test could mislead the jury regarding verified truthfulness [14]Verified Willoughby v. State, 552 N.E.2d 462 (Ind. 1990) — via MCPO Casebook
Confirms the 'opening the door' exception allowing polygraph evidence in rebuttal when defendant references polygraph during testimony.

The Lyons Decision (2023): Discovery Obligations and Polygraph Evidence

The Indiana Supreme Court's decision in State v. Lyons, 211 N.E.3d 500 (Ind. 2023), provided important guidance on discovery obligations related to polygraph stipulations [15]Verified State v. Lyons, 211 N.E.3d 500 (Ind. 2023)
Confirms Indiana Supreme Court upheld suppression of polygraph results when examiner unilaterally changed examination type without disclosure. In this case, the defendant agreed to a stipulated polygraph examination, but the administering officer unilaterally converted the exam to a non-stipulated investigatory polygraph based on concerns about the defendant's mental state — without informing the defendant or prosecutor [15]Verified State v. Lyons, 211 N.E.3d 500 (Ind. 2023)
Confirms Indiana Supreme Court upheld suppression of polygraph results when examiner unilaterally changed examination type without disclosure.

The Supreme Court affirmed the suppression of the defendant's incriminating post-polygraph statements as a discovery sanction, holding that before excluding evidence as a Trial Rule 37 discovery sanction, a trial court must find that exclusion is the sole remedy available to avoid substantial prejudice or that the sanctioned party's culpability reflects an egregious discovery violation [15]Verified State v. Lyons, 211 N.E.3d 500 (Ind. 2023)
Confirms Indiana Supreme Court upheld suppression of polygraph results when examiner unilaterally changed examination type without disclosure. This ruling reinforces the importance of transparency and procedural integrity in the polygraph stipulation process.

Examiner Qualifications and Court Scrutiny

Beyond the Sanchez stipulation requirements, Indiana trial courts carefully scrutinize examiner qualifications before admitting polygraph evidence. In Hubbard v. State (742 N.E.2d 919), the court established that courts must evaluate both the examiner's credentials and the reliability of the testing methodology before allowing polygraph evidence to be presented to a jury [5]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms IC 25-30-2-2 certification requirements, Sanchez four-part test, and Hubbard v. State qualifications standard. This includes ensuring that the scientific principles underlying the polygraph testimony are reliable and that the testimony's probative value is not substantially outweighed by the danger of unfair prejudice [5]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms IC 25-30-2-2 certification requirements, Sanchez four-part test, and Hubbard v. State qualifications standard.

Research supports the value of properly conducted polygraph examinations. Studies have found examiner accuracy rates of 92.4% for deceptive subjects and 95.5% for truthful subjects using structured scoring methods in real criminal cases [16]Verified The Accuracy and Consistency of Polygraph Examiners' Diagnoses
Found examiner accuracy of 92.4% for deceptive subjects and 95.5% for truthful subjects using structured scoring methods. In contrast, research by Köhnken (1987) found that police officers achieved only 47% accuracy in detecting deception without polygraph instruments — below the 50% chance threshold [17]Verified Training Police Officers to Detect Deceptive Eyewitness Statements
Found police officers achieved only 47% accuracy in detecting deception without polygraph instruments, below chance threshold. This stark contrast highlights the significant value that professionally conducted polygraph examinations bring to the fact-finding process.

Why Federal EPPA Governs Indiana's Private Sector

Indiana does not have state-level polygraph protection requirements for private-sector employees [18]Verified EPPA Compliance — Indiana (J. J. Keller Compliance Network)
Confirms Indiana does not have state-level polygraph protection requirements and relies on federal EPPA. This means that the federal Employee Polygraph Protection Act of 1988 (EPPA) serves as the sole regulatory framework governing private employer polygraph use in the state [18]Verified EPPA Compliance — Indiana (J. J. Keller Compliance Network)
Confirms Indiana does not have state-level polygraph protection requirements and relies on federal EPPA. The EPPA became law on December 27, 1988 [19]Verified Employee Polygraph Protection Act of 1988 — APA Overview
Confirms EPPA became law December 27, 1988 and does not affect local, state, or federal government agencies, and generally prevents most private employers from using polygraph tests either for pre-employment screening or during the course of employment [20]Verified Employee Polygraph Protection Act of 1988 — Overview
Confirms EPPA prevents most private employers from using polygraph tests and exempts government agencies.

Under EPPA, most private employers may not require or request any employee or job applicant to take a lie detector test, or discharge, discipline, or discriminate against anybody for refusing to take a test or for exercising other rights under the Act [20]Verified Employee Polygraph Protection Act of 1988 — Overview
Confirms EPPA prevents most private employers from using polygraph tests and exempts government agencies. The law does not cover federal, state, and local government agencies [20]Verified Employee Polygraph Protection Act of 1988 — Overview
Confirms EPPA prevents most private employers from using polygraph tests and exempts government agencies, which is why Indiana law enforcement agencies can freely use polygraphs in their hiring and investigative processes.

This regulatory structure means Indiana employers must be particularly vigilant about federal compliance. For perspective on how other states have implemented their own additional protections, see our guide on NY workplace rights and employer polygraph use and the Michigan Polygraph Protection Act of 1981.

EPPA Exemptions Relevant to Indiana Employers

Several EPPA exemptions are particularly relevant to Indiana businesses. The Act permits polygraph tests to be administered to certain prospective employees of security service firms (armored car, alarm, and guard companies) and of pharmaceutical manufacturers, distributors, and dispensers [20]Verified Employee Polygraph Protection Act of 1988 — Overview
Confirms EPPA prevents most private employers from using polygraph tests and exempts government agencies. Indiana has a significant pharmaceutical industry presence, making this exemption especially important.

Additionally, the Act permits polygraph testing of certain employees of private firms who are reasonably suspected of involvement in a workplace incident (theft, embezzlement, etc.) that resulted in specific economic loss or injury to the employer [21]Verified EPPA — Full Text (29 USC Ch. 22)
Confirms EPPA limited exemptions for ongoing investigations with reasonable suspicion and economic loss requirements. Even under these exemptions, strict procedural requirements must be followed, including providing written notice, allowing the examinee to consult with legal counsel, and documenting reasonable suspicion [21]Verified EPPA — Full Text (29 USC Ch. 22)
Confirms EPPA limited exemptions for ongoing investigations with reasonable suspicion and economic loss requirements.

Violations carry serious consequences: the Secretary of Labor may assess civil penalties up to $10,000 per EPPA violation [22]Verified EPPA Civil Penalties and Enforcement
Confirms Secretary of Labor may assess civil penalties up to $10,000 per EPPA violation and employees may file private lawsuits. Employees also have the right to file a private lawsuit for violations [22]Verified EPPA Civil Penalties and Enforcement
Confirms Secretary of Labor may assess civil penalties up to $10,000 per EPPA violation and employees may file private lawsuits. For employers navigating these requirements, our polygraph test pricing page provides transparency about the costs of properly administered examinations. For a broader historical perspective, see our guide on the polygraph in the 1980s and the road to the EPPA.

The Indiana State Police Polygraph Unit

The Indiana State Police Polygraph Unit provides polygraph services to the ISP and other state, county, and local law enforcement agencies throughout Indiana [23]Verified ISP Labs: Polygraph Unit
Confirms the ISP Polygraph Unit provides polygraph services to the Indiana State Police and other state, county, and local law enforcement agencies. The unit operates within the Forensic Services Division, which is organized alongside the Biology, Chemistry, Comparative Science, and Crime Scene Investigations sections [24]Verified ISP Forensic Services Division — 2024 Annual Report
Confirms 666 polygraph examinations conducted in 2024, division structure including Polygraph Unit, and regional lab locations. In 2024, the ISP Forensic Services Division conducted 666 polygraph examinations [24]Verified ISP Forensic Services Division — 2024 Annual Report
Confirms 666 polygraph examinations conducted in 2024, division structure including Polygraph Unit, and regional lab locations.

The ISP Polygraph Unit achieved a significant milestone when it became the first polygraph accredited agency in the State of Indiana, receiving accreditation from the Polygraph Law Enforcement Accreditation (PLEA) program [25]Verified Indiana State Police Polygraph Unit Receives PLEA Accreditation
Confirms ISP Polygraph Unit became first PLEA-accredited polygraph agency in Indiana, standards consistent with NCCA and federal government practices. The PLEA program ensures law enforcement agencies employ standardized practices consistent with those taught at the National Center for Credibility Assessment and validated through research [25]Verified Indiana State Police Polygraph Unit Receives PLEA Accreditation
Confirms ISP Polygraph Unit became first PLEA-accredited polygraph agency in Indiana, standards consistent with NCCA and federal government practices. The unit is staffed by regional examiners and a supervisor [25]Verified Indiana State Police Polygraph Unit Receives PLEA Accreditation
Confirms ISP Polygraph Unit became first PLEA-accredited polygraph agency in Indiana, standards consistent with NCCA and federal government practices.

The ISP also began polygraph services historically early. In 1936, just three years after the department was established, the ISP had its first officer trained on the Keeler Lie Detector [26]Verified ISP: Science Solves Crimes — History of Polygraph at ISP
Confirms ISP first trained an officer on the Keeler Lie Detector in 1936 and obtained 68 confessions by 1937; six polygraph operators statewide today. By 1937, 68 confessions to crimes had been obtained using this technology [26]Verified ISP: Science Solves Crimes — History of Polygraph at ISP
Confirms ISP first trained an officer on the Keeler Lie Detector in 1936 and obtained 68 confessions by 1937; six polygraph operators statewide today. Today, the ISP has six polygraph operators statewide [26]Verified ISP: Science Solves Crimes — History of Polygraph at ISP
Confirms ISP first trained an officer on the Keeler Lie Detector in 1936 and obtained 68 confessions by 1937; six polygraph operators statewide today.

The ISP Forensic Services Division maintains regional laboratory facilities in Evansville, Fort Wayne, Indianapolis, and Lowell, with approximately 90% of analytical services supporting county and municipal police agency investigations [24]Verified ISP Forensic Services Division — 2024 Annual Report
Confirms 666 polygraph examinations conducted in 2024, division structure including Polygraph Unit, and regional lab locations.

Pre-Employment Polygraph Screening in Indiana Law Enforcement

Polygraph examination is a mandatory component of the Indiana State Police trooper selection process [27]Verified ISP: Selection Process — Becoming a Trooper
Confirms polygraph examination is a mandatory component of the approximately seven-month ISP trooper selection process. The approximately seven-month selection process includes application, written examination, physical ability tests, oral interview, polygraph, background investigation, medical and psychological examinations, toxicology screening, superintendent's review, and recruit academy [27]Verified ISP: Selection Process — Becoming a Trooper
Confirms polygraph examination is a mandatory component of the approximately seven-month ISP trooper selection process. This comprehensive process reflects the ISP's commitment to selecting only the most qualified candidates.

The Evansville Police Department also utilizes polygraph examinations as part of its hiring process, with two EPD investigators serving as trained polygraph examiners who both attended the Backster School of Lie Detection in San Diego, California [13]Verified Evansville Police Department — Polygraph Unit
Confirms EPD examiners trained at Backster School, 15% evidentiary standard, and stipulation procedures in Indiana.

A national survey by Meesig and Horvath (1995) found that 62% of large U.S. police agencies utilized pre-employment polygraph screening, rejecting approximately 25% of applicants based on information uncovered through polygraph that other screening methods had missed [28]Verified A National Survey of Practices, Policies and Evaluative Comments on Pre-Employment Polygraph Screening in Police Agencies
Found 62% of large U.S. police agencies utilized pre-employment polygraph screening, rejecting approximately 25% of applicants based on polygraph-revealed information. This research validates the critical role polygraph plays in the law enforcement hiring process.

IPA PCSOT Guidelines and Requirements

The Indiana Polygraph Association has established comprehensive guidelines for Post-Conviction Sex Offender Testing (PCSOT) [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement. Under the IPA's PCSOT standards, clinical examiners must successfully complete a minimum of 40 hours of specialized post-conviction sex offender training and pass a final written examination recognized and approved by the IPA Board of Directors [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement. This training includes sex offender assessment, evaluation, and monitoring [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement.

All PCSOT examiners must document completion of 16 hours of approved continuing education every two years following their initial certification [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement. This continuing education must cover polygraph procedures applicable to sex offender testing, specialized training on the behavior and motivation of sex offenders, and training on trauma factors and sexual assault issues associated with victims and survivors [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement.

The IPA also requires PCSOT examiners to maintain membership in the Indiana Polygraph Association [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement. These guidelines serve to protect examined subjects, therapists, probation officers, and clinical polygraph examiners through emphasis on methods with established validity and reliability [29]Verified Indiana Polygraph Association — Sex Offender Testing Guidelines
Confirms IPA PCSOT guidelines requiring 40 hours specialized training, 16 hours continuing education every two years, and IPA membership requirement. For a deeper understanding of the maintenance polygraph process, see our guide to PCSOT maintenance polygraph: purpose, process, and frequency.

Types of PCSOT Examinations and Their Impact

PCSOT programs utilize four basic types of examinations: instant offense exams, sexual history disclosure exams, maintenance exams, and sexual offense monitoring exams [30]Verified APA Model Policy for Post-Conviction Sex Offender Testing (2021)
Confirms four basic PCSOT examination types and multidisciplinary collaboration framework for sex offender supervision. These examinations help therapists, probation officers, and court officials monitor compliance with supervision conditions and treatment programs.

A comprehensive UK evaluation by Wood et al. (2020) across nine police areas involving over 800 individuals found that polygraph-tested supervisees were nearly six times more likely to make at least one risk-relevant disclosure [31]Verified An Evaluation of Polygraph Testing by Police to Manage Individuals Convicted or Suspected of Sexual Offending
Found polygraph-tested supervisees were nearly 6 times more likely to make risk-relevant disclosures in a two-year evaluation across nine UK police areas. This landmark study recommended mandatory polygraph testing as part of sex offender supervision programs and provides compelling evidence for the value of PCSOT in increasing public safety.

The primary goal of all PCSOT activities is to increase public safety by adding incremental validity to risk-assessment, risk-management, and treatment-planning decisions made by professionals who provide supervision and sex-offense specific treatment [30]Verified APA Model Policy for Post-Conviction Sex Offender Testing (2021)
Confirms four basic PCSOT examination types and multidisciplinary collaboration framework for sex offender supervision. Indiana's use of PCSOT aligns with national best practices as outlined in the APA's 2021 PCSOT Model Policy [30]Verified APA Model Policy for Post-Conviction Sex Offender Testing (2021)
Confirms four basic PCSOT examination types and multidisciplinary collaboration framework for sex offender supervision.

History and Mission

The Indiana Polygraph Association (IPA) was established on the campus of Butler University in 1971 [32]Verified Indiana Polygraph Association — About
Confirms IPA was established on the campus of Butler University in 1971, has 50+ members, and is dedicated to evidence-based detection of deception. It is a professional organization dedicated to providing training, the exchange of ideas, and resources for the continued growth of evidence-based detection of deception through the use of polygraph [32]Verified Indiana Polygraph Association — About
Confirms IPA was established on the campus of Butler University in 1971, has 50+ members, and is dedicated to evidence-based detection of deception.

The IPA membership consists of 50+ professional polygraph examiners, educators, and researchers who share a common commitment to valid and ethical polygraph practices [32]Verified Indiana Polygraph Association — About
Confirms IPA was established on the campus of Butler University in 1971, has 50+ members, and is dedicated to evidence-based detection of deception. The association also has several members from surrounding states [32]Verified Indiana Polygraph Association — About
Confirms IPA was established on the campus of Butler University in 1971, has 50+ members, and is dedicated to evidence-based detection of deception, reflecting its regional influence. Members include private examiners, law enforcement professionals, and government personnel [32]Verified Indiana Polygraph Association — About
Confirms IPA was established on the campus of Butler University in 1971, has 50+ members, and is dedicated to evidence-based detection of deception.

The IPA normally meets biannually in Indianapolis, providing one or two-day seminars featuring a variety of speakers on aspects of the polygraph profession [33]Verified Indiana Polygraph Association — Meetings
Confirms IPA meets biannually in Indianapolis with one or two-day seminars providing continuing education. These meetings constitute a substantial portion of the continuing education requirements for polygraph examiners and provide opportunities for discussion on current developments and information exchange [33]Verified Indiana Polygraph Association — Meetings
Confirms IPA meets biannually in Indianapolis with one or two-day seminars providing continuing education. For detailed information about the association's programs and membership, visit our Indiana Polygraph Association standards and membership guide.

From Frye to Daubert: The Evolution of Scientific Evidence Standards

Indiana's polygraph admissibility rules exist within a broader national legal framework that has evolved dramatically since the early twentieth century. Frye v. United States, 293 F. 1013 (D.C. Cir. 1923) established the "general acceptance" test for scientific evidence, originally excluding the systolic blood pressure deception test [34]Verified Frye v. United States, 293 F. 1013 (D.C. Cir. 1923)
Established the 'general acceptance' test for scientific evidence, excluding the systolic blood pressure deception test. This standard governed polygraph admissibility across the country for approximately 70 years [34]Verified Frye v. United States, 293 F. 1013 (D.C. Cir. 1923)
Established the 'general acceptance' test for scientific evidence, excluding the systolic blood pressure deception test.

The landscape shifted significantly with Daubert v. Merrill Dow Pharmaceuticals (1993), which replaced Frye's general acceptance test with a more flexible reliability standard for scientific evidence in federal courts. In United States v. Posado, 57 F.3d 428 (5th Cir. 1995), the Fifth Circuit stated that the per se rule against admitting polygraph evidence did not survive Daubert and recognized "tremendous advances in polygraph instrumentation and technique" since 1923 [35]Verified United States v. Posado, 57 F.3d 428 (5th Cir. 1995)
Stated the per se rule against polygraph evidence did not survive Daubert and recognized tremendous advances in polygraph technique.

United States v. Piccinonna, 885 F.2d 1529 (11th Cir. 1989) established that polygraph evidence could be admitted under certain conditions including stipulation by both parties, creating a framework for conditional admissibility that influenced Indiana's own stipulation-based approach [36]Verified United States v. Piccinonna, 885 F.2d 1529 (11th Cir. 1989)
Established that polygraph evidence could be admitted under certain conditions including stipulation by both parties. Similarly, United States v. Cordoba, 104 F.3d 225 (9th Cir. 1997) abandoned the per se rule excluding polygraph, leaving admissibility to district court discretion under Daubert analysis [37]Verified United States v. Cordoba, 104 F.3d 225 (9th Cir. 1997)
Abandoned the per se rule excluding polygraph, leaving admissibility to district court discretion under Daubert analysis.

United States v. Scheffer and State Authority

The U.S. Supreme Court's decision in United States v. Scheffer, 523 U.S. 303 (1998) addressed whether the per se exclusion of polygraph evidence violated the Sixth Amendment right to present a defense [38]Verified United States v. Scheffer, 523 U.S. 303 (1998)
Upheld military ban on polygraph evidence but did not create blanket constitutional prohibition; Justice Stevens noted polygraph may be more reliable than other admitted evidence. The Court upheld Military Rule of Evidence 707, which bans polygraph evidence in courts-martial, but importantly did not create a blanket constitutional prohibition against polygraph evidence in civilian courts [38]Verified United States v. Scheffer, 523 U.S. 303 (1998)
Upheld military ban on polygraph evidence but did not create blanket constitutional prohibition; Justice Stevens noted polygraph may be more reliable than other admitted evidence.

Justice Stevens' dissent is noteworthy, observing that the polygraph results may be more reliable than other forms of evidence routinely admitted at trial [38]Verified United States v. Scheffer, 523 U.S. 303 (1998)
Upheld military ban on polygraph evidence but did not create blanket constitutional prohibition; Justice Stevens noted polygraph may be more reliable than other admitted evidence. The ruling effectively confirmed that individual jurisdictions, including Indiana, retain the authority to establish their own polygraph admissibility frameworks — precisely what Indiana has done through the Sanchez four-part test.

Indiana's stipulation-based admissibility approach, while more restrictive than states like New Mexico (which generally admits polygraph evidence as expert testimony), provides a structured pathway for polygraph evidence to reach the jury. For comparison with how other states handle admissibility, see our guides on Colorado CRE 702 & 403 polygraph admissibility law, Florida polygraph admissibility, and [California Evidence Code § 351.1](/legal/california-evidence-code-%c2%a7-351-1-polygraph-law-guide). For insight into how polygraph evidence functions in family proceedings, see our polygraph results in family court guide.

Professional Polygraph Testing Services

Professional polygraph examinations are available throughout Indiana from professional examiners. The Indiana State Police Polygraph Unit serves law enforcement agencies statewide [23]Verified ISP Labs: Polygraph Unit
Confirms the ISP Polygraph Unit provides polygraph services to the Indiana State Police and other state, county, and local law enforcement agencies, while private examiners provide services for personal, legal, and corporate matters.

For private and personal polygraph testing in Indiana, visit our Indiana lie detector test locations page or book an appointment directly. You can also review our polygraph test pricing for current rates. All our examiners are trained to APA standards and adhere to the highest professional standards.

Whether you need a polygraph for a legal matter, a personal concern, or professional purposes, working with a properly professional examiner is essential. Indiana's voluntary certification framework, combined with APA standards, ensures that qualified professionals are available to serve clients across the state. For more information, contact us to discuss your specific needs.