Stoelting CPSpro Fusion Software: Complete Polygraph Review

What Is CPSpro Fusion?

CPSpro Fusion is Stoelting Company's next-generation computerized polygraph system (CPS) software platform, engineered to replace and significantly improve upon the legacy CPS software that served as an industry mainstay for decades. Stoelting describes Fusion as "a quantum leap beyond any existing polygraph system available" [1]Verified CPSpro Fusion Software — Stoelting Co. Official Product Page
Confirms Fusion is designed from the ground up with single-click functionality, pREFORMAT cross-platform import, and scientifically validated scoring algorithms — and rather than applying incremental updates to the existing codebase, the company built Fusion from the ground up, rethinking every component of the examiner workflow from data collection to final report generation.

The software is designed to efficiently and reliably conduct, score, and report polygraph examinations [1]Verified CPSpro Fusion Software — Stoelting Co. Official Product Page
Confirms Fusion is designed from the ground up with single-click functionality, pREFORMAT cross-platform import, and scientifically validated scoring algorithms, serving polygraph examiners across federal law enforcement, state agencies, private practice, and PCSOT programs. The name "Fusion" reflects the software's design philosophy: merging powerful features of modern software design with the precision demands of psychophysiological detection of deception (PDD).

Stoelting Company, headquartered in Wood Dale, Illinois, was founded as the Chicago Laboratory Supply and Scale Company by Christian Hans Stoelting in 1886 [2]Verified Stoelting — Wikipedia
Confirms Stoelting was founded by Christian Hans Stoelting in 1886 in Illinois. The company has been a pioneer in physiological and psychological measurement for well over a century [3]Verified Stoelting Co. — Official Company Website
Confirms Stoelting has been a pioneer in physiological and psychological apparatus since 1886, earning recognition as early as 1904 when it received medals for Anthropometric and Psychometric Apparatus at the St. Louis Universal Exposition [4]Verified Our Company — Stoelting Polygraph Division
Confirms Stoelting received medals at the 1904 St. Louis Universal Exposition and created their first Cardio-Pneumo Polygraph in 1935. Stoelting created its first Cardio-Pneumo Polygraph in 1935 [5]Verified Our Company — Stoelting Polygraph Division (First Polygraph)
Confirms Stoelting created first Cardio-Pneumo Polygraph in 1935 and has been on the forefront of polygraph technology design and manufacture since 1930 [6]Verified CPSpro Complete Polygraph Systems — Stoelting Co.
Confirms Stoelting has been on the forefront of polygraph instrumentation since 1930 and provides pREFORMAT import details. This deep institutional history in the field gives CPSpro Fusion a knowledge base that few competitors can match. For a complete overview of all their systems, see our Stoelting Company Product Line Guide 2025.

The Evolution from Legacy CPS to Fusion

The original CPS (Computerized Polygraph System) software was a pioneering product in its era, helping transition the polygraph field from analog chart recorders to digital data collection. The CPS scoring algorithm was based on research conducted at the University of Utah's psychology laboratory, using standard multivariate linear discriminant function analysis to produce probability estimates of truthfulness or deception [7]Verified Appendix F: Computerized Scoring of Polygraph Data — National Research Council
Confirms CPS scoring algorithm is based on multivariate linear discriminant function analysis from University of Utah research, and details on Stoelting skin conductance recording. However, as operating systems evolved, display technologies improved, and scoring research advanced, the limitations of the legacy architecture became apparent.

CPSpro Fusion addresses these limitations comprehensively. The software was rebuilt with modern architecture that takes advantage of current processing power, display resolution, and storage capabilities [1]Verified CPSpro Fusion Software — Stoelting Co. Official Product Page
Confirms Fusion is designed from the ground up with single-click functionality, pREFORMAT cross-platform import, and scientifically validated scoring algorithms. The latest downloadable version (Fusion 3.4.1) requires a minimum 128 MB Video RAM display adapter with WDDM compliance and DirectX 9.0 support, and benefits from Intel Dual- or Quad-Core processors [8]Verified CPSpro Deluxe System — Stoelting Co.
Confirms system requirements including processor, RAM, display adapter, and Windows Experience Index recommendations.

For examiners who built extensive case archives in the legacy CPS format, Stoelting designed a dynamic import system that brings old files into the new Fusion environment with automatic format conversion [9]Verified CPSpro Deluxe System — Legacy Import Details
Confirms legacy CPS import with automatic format conversion and improved chart clarity. The company notes that legacy charts actually look better when viewed in Fusion, with improved clarity and vibrancy [9]Verified CPSpro Deluxe System — Legacy Import Details
Confirms legacy CPS import with automatic format conversion and improved chart clarity. For more context on how polygraph software has evolved, see our guide to polygraph technology from the 1990s vs 2020s.

A Modern User Interface Built for Examiners

One of the first things examiners notice when launching CPSpro Fusion is the quick start landing page — a clean, organized dashboard providing immediate access to every major function without unnecessary navigation layers [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. Stoelting designed the interface to be "so simple and transparent that the examiner can navigate with extreme ease" [1]Verified CPSpro Fusion Software — Stoelting Co. Official Product Page
Confirms Fusion is designed from the ground up with single-click functionality, pREFORMAT cross-platform import, and scientifically validated scoring algorithms, with virtually all functions and actions accomplishable with a single click at any point in the program.

The landing page organizes primary functions into logical groupings: new examination setup, subject search, recent cases, and configuration options are all accessible from the main screen. The CPS Fusion Subject List provides optimized organization of all polygraph exams through a sortable, searchable, user-friendly display [11]Verified CPS Elite Polygraph Systems — Stoelting Co.
Confirms CPS Fusion benefits including multilingual interface, built-in touchscreen display, and Elite hardware specifications at 360 samples per second. The interface uses a color scheme and typography designed to reduce eye strain during extended use — an important consideration for examiners who may spend hours reviewing charts and scoring examinations.

Fusion also includes an integrated Multilingual User Interface (MUI) supporting English, Korean, Spanish, and Russian [11]Verified CPS Elite Polygraph Systems — Stoelting Co.
Confirms CPS Fusion benefits including multilingual interface, built-in touchscreen display, and Elite hardware specifications at 360 samples per second, making it accessible to a global examiner community.

Workflow Efficiency Improvements

Beyond aesthetics, the UI improvements in Fusion translate to measurable workflow efficiency. The automatic features in CPS Fusion software allow examiners to spend less time running the software and more time monitoring the subject [12]Verified CPS Elite Polygraph — Automatic Software Features
Confirms automatic features in Fusion allow examiner to spend less time running software and more time monitoring subject. Functions that previously required multiple dialog boxes and menu navigation can now be accomplished in fewer steps.

This efficiency is especially valuable in high-volume environments such as pre-employment screening programs where examiners may conduct multiple examinations per day. For examiners working in the field, the streamlined interface means less time troubleshooting software issues and more time focused on the examination itself. The reduced complexity leads to fewer user errors during high-pressure testing situations. For tips on maintaining your software, see our guide on why keeping polygraph systems current matters.

Revolutionary Chart Visualization

The chart recorder is the heart of any computerized polygraph system, and Stoelting invested heavily in making Fusion's chart recorder among the most advanced in the industry [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. The quality of chart visualization directly impacts an examiner's ability to identify and evaluate physiological responses, making this component critical to examination accuracy.

Fusion's chart recorder delivers exceptional rendering quality, producing smooth, detailed tracings that faithfully represent the physiological data being collected. The visual clarity is particularly noticeable compared to legacy systems where chart rendering could appear jagged or lose fine detail at certain display scales. For examiners who need to read and interpret polygraph results with precision, this improvement is significant. To understand what each tracing represents, see our guide on what each polygraph chart channel measures.

18 Scrolling Speed Options

CPSpro Fusion provides 18 different scrolling speeds, all accessible at any point during a live examination [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. This granular control over chart speed gives examiners the ability to optimize their view based on the specific phase of the examination, the physiological channels being observed, or the testing technique being employed.

Slower scrolling speeds are useful for observing gradual trends in electrodermal activity (EDA) or respiratory patterns, while faster speeds help identify quick, transient cardiovascular responses. The ability to change speeds without interrupting the examination means examiners can adapt their viewing in real time based on what they observe.

Time-Drag Feature During Live Recording

One of Fusion's most innovative features is the ability to drag the chart back in time during a live recording session. In traditional polygraph software, the examiner watches the chart scroll in real time — if they want to review a portion that has already scrolled past, they typically need to wait until the recording is complete.

Fusion eliminates this limitation. While the system continues to record data in the background, the examiner can grab the chart display and pull it backward to review earlier portions of the current chart. When released, the display snaps back to the real-time position. This feature is particularly valuable during long chart segments or when an examiner needs to quickly verify whether a response occurred at an earlier question.

Automatic Channel Centering & Real-Time Metrics

CPSpro Fusion includes automatic centering for Cardio and EDA channels. This ensures that when the display is refreshed or the examiner switches between views, channels are automatically repositioned to optimal viewing positions. No data is lost during this recentering process — the system preserves the complete data stream while adjusting the visual display.

During both live recording and chart replay, Fusion displays real-time physiological metrics including mmHg (blood pressure measurements from the cardiovascular channel), pulse rate (calculated from the cardio waveform in beats per minute), microsiemens (skin conductance measurements for EDA analysis), and ohms (skin resistance measurements). The Stoelting system specifically records skin conductance for the electrodermal channel [7]Verified Appendix F: Computerized Scoring of Polygraph Data — National Research Council
Confirms CPS scoring algorithm is based on multivariate linear discriminant function analysis from University of Utah research, and details on Stoelting skin conductance recording, and the CPSpro hardware cardiograph supports up to 200 mmHg [13]Verified CPSpro Deluxe System — Hardware Specifications
Confirms CPSpro cardiograph supports up to 200 mmHg and USB 2.0 plug-and-play connection. Having these numerical values displayed alongside the chart tracings allows examiners to quantify observations and verify sensor connections are providing physiologically appropriate values.

Complete Overhaul for Modern Workflows

The question editor in CPSpro Fusion represents a complete redesign, reflecting the reality that question formulation is one of the most time-intensive and critically important phases of polygraph examination preparation [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. Fusion's question editor supports both single-subject and multi-subject examination workflows. For agencies conducting high-volume screening, the ability to manage question sets for multiple subjects within a unified interface significantly reduces administrative overhead.

For private practice examiners handling diverse case types, the flexibility to quickly adapt question lists is equally valuable. Whether conducting single-issue polygraph tests or multi-issue screening examinations, the editor adapts to the examiner's needs.

User-Created Question Library

One of the most practical features is the user-created question library. Examiners can build a personal database of frequently used questions, organized by examination type, testing technique, or any categorization scheme that fits their practice. When setting up a new examination, questions can be pulled from this library instantly rather than retyped.

This library is particularly valuable for standardized testing protocols where specific question wording matters. Examiners conducting PCSOT examinations, for example, often use established question frameworks that must be worded precisely. The library also supports exam question sequences — complete, ordered sets of questions that can be saved and retrieved as a unit. An examiner who regularly uses a particular Zone Comparison Test (ZCT) or Modified General Question Test (MGQT) format can save their entire question sequence once and deploy it instantly for future examinations, adjusting only the relevant-issue-specific questions for each new case.

Built-In Rich Text Editor with Spell Check

Fusion includes a rich text editor directly within the question development interface. This editor supports text formatting options that allow examiners to emphasize key terms, add notes, or structure question documentation for clarity. The integrated spell check catches typographical errors before they appear in final documentation — an important detail for maintaining professional standards.

The rich text capabilities also extend to notes and annotations that examiners can attach to individual questions. This is useful for documenting the rationale behind specific question wording choices, recording information from the pre-test interview that influenced question development, or noting adjustments made between chart series.

Custom Subject Profile Templates

CPSpro Fusion allows examiners and agencies to create custom subject profile templates that standardize information collected about each examinee [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. Rather than working with a fixed set of data fields, examiners can configure templates to capture exactly the information their practice requires.

For law enforcement agencies, a subject profile template might include fields for case numbers, officer badge numbers, investigation identifiers, and chain-of-custody information. For private practice examiners handling infidelity testing, the template might focus on relationship details and scheduling data. For pre-employment screening, templates could include applicant tracking numbers and HR contact information. This template system eliminates the need for examiners to maintain separate databases or paper records, centralizing all relevant subject data within Fusion.

Smart Subject Search Functionality

As examiners accumulate case files over months and years of practice, the ability to quickly locate specific subject records becomes increasingly important. Fusion's smart subject search uses intelligent filtering to help examiners find records based on partial names, dates, case numbers, or other profile fields [14]Verified CPSpro Fusion Download — Software Informer
Confirms Fusion includes question editor, smart subject search, dynamic import capabilities, and numerical scoring features. The search is designed to be forgiving of spelling variations and partial entries, recognizing that examiners often need to find records quickly without remembering exact details.

Seamless Legacy CPS Migration

Stoelting addressed the concern about losing access to historical data directly with Fusion's dynamic importing capabilities. Users of CPS Legacy are able to import their existing subject files into Fusion, which then converts the data into the new Fusion format [9]Verified CPSpro Deluxe System — Legacy Import Details
Confirms legacy CPS import with automatic format conversion and improved chart clarity. Stoelting notes that users "will immediately notice how much more clear and vibrant your charts look" [9]Verified CPSpro Deluxe System — Legacy Import Details
Confirms legacy CPS import with automatic format conversion and improved chart clarity — the physiological data remains unchanged while the rendering and display are dramatically improved.

This conversion feature is particularly valuable for agencies that maintain case archives spanning many years and may need to review old examinations for legal proceedings, quality assurance audits, or research purposes. For a deeper look at the predecessor system, see our Stoelting CPS II technical review.

Cross-Platform Import via pREFORMAT

Fusion's importing capabilities extend beyond Stoelting's own legacy systems. According to Stoelting's official product documentation, examiners can "import Axciton, Lafayette, or Limestone data into Fusion as long as it was exported in pREFORMAT" [15]Verified CPSpro Fusion Software — pREFORMAT Import Details
Confirms import of Axciton, Lafayette, and Limestone data via pREFORMAT format, and inclusion of scientifically validated scoring algorithms. This cross-platform compatibility is significant because it means agencies are not locked into a single vendor ecosystem.

For examiners who have used multiple systems throughout their careers, or for agencies that have acquired case files from different departments or contractors using different platforms, this import flexibility ensures all examination data can be consolidated into a single system. Examiners familiar with other platforms like the LX5000 system or the Limestone ParagonX Pro will appreciate that Fusion supports these data migrations. For complete details on the cross-platform data format, see our NCCA ASCII polygraph data format guide.

High-Quality Chart Printing

The quality of printed charts matters in the polygraph profession. Charts may need to be included in reports submitted to courts, attorneys, law enforcement agencies, or oversight bodies. Fusion's advanced printing capabilities ensure that printed charts maintain the same clarity and detail visible on screen, producing professional-quality output suitable for any legal or administrative context.

The printing system supports standard paper sizes and printer configurations. Examiners can customize which portions of the chart to print, the scale of the output, and the inclusion of annotations and scoring marks. Reports include numerical scores and subtotals for each relevant question, each chart, and each physiological component included in the score sheet [15]Verified CPSpro Fusion Software — pREFORMAT Import Details
Confirms import of Axciton, Lafayette, and Limestone data via pREFORMAT format, and inclusion of scientifically validated scoring algorithms.

OpenDocument-Compatible Report Writing

CPSpro Fusion introduces an entirely new report writing feature [10]Verified CPSpro Fusion — MedicalExpo Product Listing
Confirms feature list including quick start landing page, state-of-the-art chart recorder, redesigned question editor, custom profiles, smart search, and scoring algorithms. The report writer is compatible with any word processor that supports the OpenDocument format (ODT), a widely adopted open standard supported by major office suites including LibreOffice, Apache OpenOffice, and Microsoft Word.

The choice of OpenDocument format ensures examiners are not locked into any single word processing application. Reports can be created, edited, and shared across different software environments without formatting issues or compatibility problems.

The Report Wizard guides examiners through report creation step by step, ensuring all required elements are included. The template framework allows creation of standardized report formats that automatically populate with examination data, reducing manual data entry and associated transcription errors.

Scientifically Validated Scoring Algorithms in Fusion

CPSpro Fusion integrates multiple scientifically validated scoring algorithms — all included with the software [15]Verified CPSpro Fusion Software — pREFORMAT Import Details
Confirms import of Axciton, Lafayette, and Limestone data via pREFORMAT format, and inclusion of scientifically validated scoring algorithms. This gives examiners flexibility to select the method most appropriate for their testing protocol and agency requirements. CPS Fusion software is used by practitioners to ensure the highest standard of testing with scientifically validated scoring algorithms, including Utah Probability, Response Magnitudes, and the Objective Scoring System version 3 (OSS-3) [16]Verified Pacific Polygraph of Oregon — CPS Fusion Scoring Algorithms
Confirms CPS Fusion includes Utah Probability, Response Magnitudes, and OSS-3 scoring algorithms.

Research on modern polygraph scoring algorithms has demonstrated that these computational methods can significantly enhance the consistency and defensibility of polygraph examinations. A study on deception detection found that detection accuracy in reviewed research ranged from 51% to 100%, with 19 of 81 studies achieving above 90% accuracy [17]Verified Deception detection with machine learning: A systematic review and statistical analysis
Confirms detection accuracy ranged from 51% to 100% across 81 reviewed studies, with 19 achieving above 90% accuracy. OSS-3 and PolyScore have demonstrated accuracy rates between 85–92% under laboratory conditions [18]Verified Modern Algorithms in Polygraph Data Analysis — Polygraph UK
Confirms OSS-3 and PolyScore demonstrated accuracy rates between 85–92% under laboratory conditions, and recent research using particle swarm-optimized machine learning approaches continues to push the boundaries of polygraph-based truth detection [19]Verified High-Performance Polygraph-Based Truth Detection System: Leveraging Multi-Modal Data Fusion and Particle Swarm-Optimized Random Forest
Foundational research relevant to modern polygraph scoring using multi-modal data fusion. For more on how AI is being integrated into polygraph systems, see our dedicated guide.

Utah Probability Scoring

The Utah Numerical Scoring System, developed by researchers at the University of Utah including Brian G. Bell, David C. Raskin, Charles R. Honts, and John C. Kircher, is a highly reliable and valid method for scoring specific-incident, comparison-question tests [20]Verified The Utah Numerical Scoring System
Confirms Utah system assigns +3 to -3 scores for respiration, EDA, blood pressure, and vasomotor activity for each relevant question presentation. The system assigns scores from +3 to -3 for respiration, electrodermal activity, relative blood pressure, and peripheral vasomotor activity for each presentation of a relevant question [20]Verified The Utah Numerical Scoring System
Confirms Utah system assigns +3 to -3 scores for respiration, EDA, blood pressure, and vasomotor activity for each relevant question presentation.

The Utah-CQT and its corresponding scoring system resulted from over 30 years of empirical research [21]Verified Utah Approach to Comparison Question Polygraph Testing
Confirms Utah-CQT resulted from over 30 years of empirical research with high criterion accuracy and interrater reliability. Excluding inconclusive outcomes, the overall percentage of correct decisions in laboratory studies was 91% for guilty subjects and 89% for innocent subjects [22]Verified Utah Numerical Scoring System — Office of Justice Programs
Confirms interrater reliability exceeding.90, decision agreement above 95%, and 91% correct decisions for guilty subjects, 89% for innocent. The interrater reliability of the Utah system has consistently exceeded.90, with percent agreement on decisions exceeding 95% when both evaluators reach a definite decision [22]Verified Utah Numerical Scoring System — Office of Justice Programs
Confirms interrater reliability exceeding.90, decision agreement above 95%, and 91% correct decisions for guilty subjects, 89% for innocent. Its inclusion in Fusion provides examiners with one of the most extensively validated scoring methods available.

Objective Scoring System Version 3 (OSS-3)

The Objective Scoring System version 3 (OSS-3) is a computer-based scoring algorithm developed by Raymond Nelson, Donald J. Krapohl, and Mark Handler [23]Verified Brute-Force Comparison: A Monte Carlo Study of the OSS-3 and Human Polygraph Scorers
Confirms OSS-3 was developed by Nelson, Krapohl, and Handler, demonstrated balanced sensitivity/specificity and exceeded human scorer accuracy. The OSS-3 uses measurements of physiological features first described by researchers at the University of Utah — commonly known as "Kircher features" — including amplitude of increase for electrodermal and cardiovascular activity, along with reduction of respiration activity [24]Verified Brute-Force Comparison: OSS-3 — ResearchGate
Confirms OSS-3 accuracy exceeded 9 out of 10 human scorers across 6 accuracy dimensions using Kircher features.

OSS-3 demonstrated balanced sensitivity and specificity and provided significant improvements over previous OSS versions, including reduced inconclusive results and increased sensitivity to deception [23]Verified Brute-Force Comparison: A Monte Carlo Study of the OSS-3 and Human Polygraph Scorers
Confirms OSS-3 was developed by Nelson, Krapohl, and Handler, demonstrated balanced sensitivity/specificity and exceeded human scorer accuracy. Using Monte Carlo techniques, OSS-3 accuracy exceeded the average decision accuracy of 10 human scorers, and 9 out of 10 individual scorers, across 6 dimensions of accuracy [24]Verified Brute-Force Comparison: OSS-3 — ResearchGate
Confirms OSS-3 accuracy exceeded 9 out of 10 human scorers across 6 accuracy dimensions using Kircher features. The OSS eliminates subjectivity in chart interpretation by deriving scores from measurements rather than visual assessment [25]Verified Objective Scoring System (OSS) — British Polygraph Society Glossary
Confirms OSS is a 7-position scoring method using Kircher feature ratios that eliminates subjectivity and has been automated by polygraph manufacturers. It has been automated by several computer polygraph manufacturers, including both Stoelting and Lafayette [25]Verified Objective Scoring System (OSS) — British Polygraph Society Glossary
Confirms OSS is a 7-position scoring method using Kircher feature ratios that eliminates subjectivity and has been automated by polygraph manufacturers.

Empirical Scoring System (ESS)

The Empirical Scoring System (ESS) is an evidence-based numerical scoring model for manual test data analysis of PDD test data from comparison question test formats [26]Verified Empirical Scoring System — British Polygraph Society Glossary
Confirms ESS is an evidence-based numerical scoring model for CQT formats with normative data cut scores. The ESS includes description of physiological data features correlated with truth and deception, mathematical transformation methods, decision rules for classification, and numerical cut scores based on normative data [26]Verified Empirical Scoring System — British Polygraph Society Glossary
Confirms ESS is an evidence-based numerical scoring model for CQT formats with normative data cut scores.

A cross-cultural replication study found that bootstrap analysis of examiner scores using the ESS resulted in a mean accuracy rate of 90.1% (95% CI = 83.8% to 95.8%) [27]Verified Empirical Scoring System: A Cross-Cultural Replication and Extension Study
Confirms ESS mean accuracy rate of 90.1% with 95% CI in cross-cultural replication study. The ESS was first described in publication in 2008 and has become one of the most widely used methods for polygraph test data analysis throughout the U.S. and internationally [28]Verified ESS-M and the Utah Numerical Scoring System — ResearchGate
Confirms ESS was first described in 2008 and ESS-M has become one of the most widely used scoring methods internationally. The ESS-M variant, employed by Limestone Technologies, has gained broad acceptance for multi-channel data harmonization [29]Verified Modern Algorithms in Polygraph Data Analysis — ESS-M Section
Confirms Limestone Technologies employs ESS-M for multi-channel data harmonization with broad international acceptance.

Response Magnitudes

The Response Magnitudes scoring method provides another analytical approach available in Fusion. This technique focuses on measuring the magnitude of physiological responses rather than relying solely on pattern comparison between relevant and comparison questions.

Having multiple validated scoring algorithms available within a single platform gives examiners the ability to cross-validate their findings using different methods — increasing confidence in examination outcomes and providing stronger support for conclusions in both investigative and evidentiary contexts. Understanding where response changes occur is central to accurate scoring — our guide on the deceptive reaction zone in polygraph scoring covers this in detail.

Fusion vs. Lafayette LXSoftware

Lafayette Instrument Company offers the LXSoftware platform [30]Verified LXSoftware — Lafayette Instrument Company
Confirms LXSoftware platform is bundled with OSS-3 and compatible with LX4000, LX5000, LX6, and LX7 systems, which is compatible with the LX4000, LX5000, LX6, and LX7 systems [30]Verified LXSoftware — Lafayette Instrument Company
Confirms LXSoftware platform is bundled with OSS-3 and compatible with LX4000, LX5000, LX6, and LX7 systems. LXSoftware is bundled with the OSS-3 scoring algorithm [30]Verified LXSoftware — Lafayette Instrument Company
Confirms LXSoftware platform is bundled with OSS-3 and compatible with LX4000, LX5000, LX6, and LX7 systems and supports the ESS-M scoring system through its score sheet interpreter. Lafayette has also released LXEdge as its next-generation software, compatible with the LX6, LX7, and Limestone Paragon series [31]Verified LXEdge — Lafayette Instrument Company
Confirms LXEdge is Lafayette's next-generation software compatible with LX6, LX7, and Limestone Paragon series.

While both platforms offer validated scoring algorithms and modern interfaces, Fusion's unique advantages include its time-drag chart review feature during live recording, 18 scrolling speeds, and the integrated Multilingual User Interface. Lafayette's ecosystem benefits from the extensive LX hardware range and deep integration with the Limestone product line. For a detailed look at Lafayette's flagship, see our LX5000 technical guide or our LX7-S technical review.

Fusion vs. Limestone Polygraph Professional Suite

Limestone Technologies, now a subsidiary of Lafayette Instrument Company since August 2022 [32]Verified Lafayette Instrument Co. Acquires Limestone Technologies
Confirms Lafayette acquired Limestone Technologies on August 12, 2022, offers the Polygraph Professional Suite software designed for its Paragon-series polygraph systems [33]Verified Polygraph Pro Suite Software — Limestone Technologies
Confirms Polygraph Pro Suite is designed for Limestone Technologies series with ChartSync utility and scoring algorithm support. The Polygraph Pro Suite is known for its ChartSync utility that synchronizes video, audio, and chart data for comprehensive review [33]Verified Polygraph Pro Suite Software — Limestone Technologies
Confirms Polygraph Pro Suite is designed for Limestone Technologies series with ChartSync utility and scoring algorithm support.

Limestone's system employs the ESS-M scoring model and the ASIT PolySuite algorithm [34]Verified ASIT PolySuite — Academy for Scientific Investigative Training
Confirms ASIT PolySuite scoring algorithm is offered by Limestone Technologies — the Academy for Scientific Investigative Training's Horizontal Scoring System and Algorithm for Chart Interpretation [35]Verified Integrated Zone Comparison Polygraph Technique Accuracy with Scoring Algorithms
Confirms ASIT Poly Suite achieved 90% accuracy (100% excluding inconclusives) in blind study of IZCT scoring. In blind studies, the IZCT with ASIT PolySuite achieved 90% accuracy when inconclusives were counted as errors and 100% when they were excluded [35]Verified Integrated Zone Comparison Polygraph Technique Accuracy with Scoring Algorithms
Confirms ASIT Poly Suite achieved 90% accuracy (100% excluding inconclusives) in blind study of IZCT scoring. The ParagonX hardware boasts the highest sampling rate in any polygraph instrument at native 625 samples per second per channel [36]Verified ParagonX Polygraph System — Lafayette Instrument Company
Confirms ParagonX has native 625 samples per second per channel, the highest sampling rate in any polygraph instrument. For a direct comparison, see our Limestone ParagonX Pro vs. Lafayette LX7-S comparison.

Fusion vs. Axciton Systems

Axciton Systems was the first company to produce a usable computerized polygraph system [37]Verified Axciton Systems, Inc. — Official Website
Confirms Axciton was the first company to produce a usable computerized polygraph system and has been focused exclusively on computerized polygraph advancement for over 25 years. Axciton's systems use the PolyScore algorithm developed at Johns Hopkins University Applied Physics Laboratory, which employs logistic regression for its classification model [7]Verified Appendix F: Computerized Scoring of Polygraph Data — National Research Council
Confirms CPS scoring algorithm is based on multivariate linear discriminant function analysis from University of Utah research, and details on Stoelting skin conductance recording.

Fusion's ability to import Axciton data (via pREFORMAT export) [15]Verified CPSpro Fusion Software — pREFORMAT Import Details
Confirms import of Axciton, Lafayette, and Limestone data via pREFORMAT format, and inclusion of scientifically validated scoring algorithms makes transitioning or consolidating archives straightforward. For a comprehensive look at Axciton's product line, see our Axciton Systems full product guide and Axciton CPS technical review.

Stoelting's Fourth-Generation Hardware

The CPS Elite is Stoelting's most current-generation polygraph system, which pairs directly with CPS Fusion software [38]Verified CPS Elite — Stoelting Systems Page
Confirms CPS Elite is the fourth generation CPS with built-in touchscreen and multiple input options. It is the fourth generation Computerized Polygraph System and the only polygraph unit with a built-in display — a full-color LCD touchscreen that mirrors the computer software, allowing examiners to select channels and verify sensor functionality without leaving the subject [38]Verified CPS Elite — Stoelting Systems Page
Confirms CPS Elite is the fourth generation CPS with built-in touchscreen and multiple input options.

The Elite hardware offers multiple input options including smart blood pressure calibrated for absolute accuracy with temperature correction, skin conductance/skin resistance sampling at 360 samples per second, Piezo electric activity monitoring expandable to arms, feet, and masseter muscle, plethysmograph, and both mechanical and Piezo respiration sensors [38]Verified CPS Elite — Stoelting Systems Page
Confirms CPS Elite is the fourth generation CPS with built-in touchscreen and multiple input options. The CPSpro has been officially replaced with the Elite as Stoelting's primary system [39]Verified Stoelting Polygraph Systems — Product Listing
Confirms the CPSpro has been replaced with the Elite as Stoelting's primary system. For related equipment, see our review of the Stoelting Portable Polygraph Armrest and our guide to polygraph equipment insurance.

Technical Specifications

CPSpro Fusion requires a Windows-based computer system. The recommended specifications include an Intel Dual- or Quad-Core or AMD Processor at 2.0GHz or better, 2GB RAM (more for 64-bit operating systems), and a display adapter with minimum 128 MB Video RAM that is WDDM Compliant and supports DirectX 9.0, Pixel and Vertex Shader 2.0 [8]Verified CPSpro Deluxe System — Stoelting Co.
Confirms system requirements including processor, RAM, display adapter, and Windows Experience Index recommendations.

The software needs 300 MB of disk space to install, with additional space required for examination files [8]Verified CPSpro Deluxe System — Stoelting Co.
Confirms system requirements including processor, RAM, display adapter, and Windows Experience Index recommendations. The current downloadable version is Fusion 3.4.1 [40]Verified Stoelting Software Downloads — Fusion Version 3.4.1
Confirms current downloadable version is Fusion 3.4.1 (324MB). For computers running Windows 7, Stoelting recommends checking the Windows Experience Index — a base score of 3.7 ensures capability, while 4.5 or higher ensures smooth operation [8]Verified CPSpro Deluxe System — Stoelting Co.
Confirms system requirements including processor, RAM, display adapter, and Windows Experience Index recommendations. The software supports Windows 7, 8, 10, and 11 [41]Verified CPSpro Fusion — Free Download Manager
Confirms CPSpro Fusion supports Windows 7, 8, 10, and 11.

For examiners considering whether to invest in new equipment versus refurbished options, our guide on refurbished polygraph equipment risks and benefits offers important considerations. Those just beginning their career may also benefit from reading about polygraph training schools and the path to becoming a polygraph examiner.

Getting the Most from CPSpro Fusion

To maximize the value of CPSpro Fusion, examiners should invest time in building their question library early, creating templates for their most common examination types, and configuring subject profile templates to match their agency requirements. This upfront investment pays dividends through faster setup times on every subsequent examination.

Examiners should take advantage of the multiple scoring algorithms by comparing results across methods. Research shows that computerized systems have the potential to reduce bias in chart reading and eliminate problems of imperfect inter-rater variability that exist with human scoring [7]Verified Appendix F: Computerized Scoring of Polygraph Data — National Research Council
Confirms CPS scoring algorithm is based on multivariate linear discriminant function analysis from University of Utah research, and details on Stoelting skin conductance recording. Using algorithm-assisted scoring alongside traditional manual evaluation provides a powerful quality assurance mechanism.

For examiners transitioning from other platforms, a recommended approach is to import a selection of previously completed cases from your old system using the pREFORMAT format and compare how the charts render in Fusion versus your previous software. This builds familiarity with Fusion's visualization while allowing you to verify that your historical data transferred accurately. Understanding the evolution of the industry, from the polygraph industry's digitization era in the 1990s to modern platforms like Fusion, can also provide valuable professional context.

Recent research continues to validate the importance of using multiple data modalities in deception detection. Studies show that human deception detection accuracy remains at only about 54% — barely better than chance [42]Verified Deception detection using machine learning and deep learning techniques: A systematic review
Confirms human deception detection accuracy remains at only 54%, supporting the value of computerized scoring algorithms — which underscores the critical value that validated computerized scoring algorithms provide when integrated into platforms like CPSpro Fusion.