Menu
Between a course graduate and a real expert lies a gap of several years. Hundreds of completed examinations. A deliberate growth strategy. This distance is usually underestimated at the start.
A basic certificate after 4–6 weeks opens the door to the profession. However, it does not turn a graduate into a specialist for serious cases. Such an expert's findings must be trusted by courts, corporations and lawyers. Therefore, this article covers how to walk the full distance: where to study, how many years to invest, which certifications to collect.
Below we examine every layer of the profession. These are formal candidate requirements. International APA and EPA certification. Also — the supervised internship of hundreds of examinations and forensic expert attestation.
In addition, we calculate the real budget. How much study costs in Ukraine. And in Europe. What equipment is needed. What salaries emerge on the market. If the goal is not "a piece of paper" but recognised status — the plan will be clear.
Fact: In 2025, Ukraine's National Qualifications Agency approved the professional standard "Polygraph Examiner" — for the first time in the country's history. The leading professional association of polygraph examiners was designated as the authorised body for the standard. This means the profession has left the "grey zone" and gained a formal qualification framework.
From the outside, a polygraph examiner often looks like an instrument operator. They press buttons and watch lines move on a screen. This image is cemented by cinema.
In practice, much of the work happens before the client sits in the chair. And continues long after the sensors come off. Every complete session breaks into three stages. Each stage requires different skills. Moreover, a failure at the first stage erases the results of the rest.
Pre-test interview. At this stage the expert establishes rapport with the client. Explains the procedure. Checks the psychophysiological state. Then agrees every question that will sound during recording. This task is communicative and psychological. Therefore, human rather than technical competencies are required.
Testing. Here the work becomes technical. Correct sensor attachment. Quality control of each recording channel. Selection of the appropriate methodology. Correct presentation of question series at the right pace.
Chart analysis. The most analytical stage. The expert compares reactions across question categories. Uses a validated numerical scoring scale. Identifies artefacts. Separates stress reactions from deception reactions. Then writes a formal report. The document may later face review in court or by another specialist.
Between sessions an examiner reads case files. Agrees question wording with clients. Writes reports. Updates qualifications. Calibrates equipment. This is work at the intersection of psychology, physiology, jurisprudence and data analytics.
Polygraph examination is a broad field. Over time, every expert focuses on one or two directions. The competencies for a family check and for a criminal examination overlap very little.
The most common specialisation is personnel screening. These are pre-employment checks for positions with access to finances or confidential information. Most careers begin here. Order volume is steady. The format is repeatable.
Corporate investigations are the next level. These are internal official investigations. Theft, information leaks, conflicts of interest. Group-handling skills and legal literacy are required.
Criminal investigations and forensic psychophysiological examination are the most demanding directions. They require many years of experience and a separate forensic expert attestation.
Family matters include infidelity checks, family conflict resolution and teen polygraph testing. Formally simpler. However, emotionally heavier than many criminal cases. Communication skills here are critical.
A narrow international specialisation also exists — PCSOT. In England and Wales it is legally mandatory. Applied to released sex offenders on probation. Requires 40+ additional hours of training.
Advertisements about a "three-day course" or "complete online training" appear regularly. Sometimes they hide an abbreviated programme. More often — outright fraud. In any case, no serious certificate is obtainable in a week.
The minimum serious programme in Ukraine is around 250 academic hours and 4–6 weeks of intensive training. International APA and EPA standards demand 400+ hours. Plus an internship on dozens of real cases.
The reason is simple. An examiner's mistake is costly. Other people pay for it. A false positive will destroy the family or career of an innocent person. A false negative lets a criminal walk free.
For 95–99% accuracy the specialist masters not only the device. Also — dozens of question construction methodologies. Chart interpretation norms. The legal context of different countries. And one must also learn to distinguish general stress from a deception reaction. This requires hundreds of repetitions on living subjects.
Formal requirements vary from country to country. However, the typical Ukrainian picture looks like this. A higher education — preferably in psychology, law, medicine or the military. And a minimum of three years of professional experience.
This is not a formality. Psychophysiology rests on knowledge of anatomy, psychology, statistics and methodology. Candidates without that base quickly fall behind. And fail the final assessment.
The American path is stricter. APA-accredited schools require at least an associate's degree. Plus two years of investigative experience: police, private security, military or corporate investigations.
The European model is closer to the American one. EPA membership requires 400+ hours of accredited training. Also — a character reference from a previous employer.
Education can be supplemented. Character cannot. An examiner regularly works with people in stress, fear, anger.
They must keep a cool head when interviewing a suspect. And simultaneously show empathy toward a woman who suspects her husband of infidelity.
The baseline qualities: stress tolerance, observational skills, emotional stability, discipline. Moreover — a preference for long analytical work. No alternatives.
Equally important is an ethical backbone. A specialist regularly faces pressure situations. One could "tweak" a wording or interpretation in favour of one party. Resisting this pressure must come from both an ethics code and personal principles.
Technical requirements complement the formal ones. Most centres require a personal laptop with Windows 10 or later. An Intel i3 processor or equivalent. At least 8 GB of RAM. The reason — polygraph software is resource-intensive.
Nearly all programmes exclude candidates with an unspent criminal record. Also — those with serious mental disorders. And those with active substance dependence.
Important: If you lack higher education but have military or law enforcement experience — many centres accept you through an abbreviated scheme. The same applies to combat veterans. Discounts of 20% and more on tuition are common. For veterans with disabilities — up to 50%.
Ukraine has built a relatively mature training system. The market hosts around five or six centres at a serious level. Plus dozens of smaller operators of varying conscientiousness.
Centre quality is determined by three markers. A proprietary curriculum and methodology. Instructor-practitioners with documented experience. Built-in practice on real subjects, not only on "training" scenarios.
Below is an overview by format and average market data. Without names or rankings. Specific centres are better selected independently. Study instructor reputation, graduate reviews and the institution's accreditation level.
The most common format on the Ukrainian market. Duration — 4–6 weeks of full-time study. Typically 9:00 to 15:00, six days a week. Plus homework.
The total load is 250–300 academic hours. That equals about 8.5–10 ECTS credits. The programme includes theory (psychophysiology, methodologies, legal framework). Also — work with software and sensors.
A mandatory element is practical sessions with real respondents under instructor supervision. As a rule, no fewer than 15–20 "live" tests per course.
Upon completion a document package is issued. A diploma of advanced training from an accredited institution. A polygraph examiner ID from a professional association, valid for three years. Inclusion in the national specialist registry.
Most centres offer mentor support for 3–6 months after graduation. This is a critical period. The graduate refines technique on first independent cases. And often needs consultation from a senior colleague.
The cost in this segment is USD 1,200–3,000. It depends on the centre, group size and certificate package. Plus preferential rates for certain participant categories.
The same volume of theory and practice. But with a single student. A flexible schedule. A programme shaped to the candidate's goals: corporate investigations, family matters or preparation for forensic work.
The cost is significantly higher — USD 5,000–10,000 and above. This format is often chosen by experienced professionals from adjacent fields. For example, HR managers, security personnel and lawyers. They want to add polygraph examination to existing competencies. Without leaving their main job.
The blended distance-and-in-person format is a compromise for participants from the regions and from abroad. Three to four weeks of theory remotely: video lectures, online group sessions, testing, homework. Then one or two weeks of in-person practice in Kyiv or Lviv with real respondents. Cost — USD 2,000–3,500.
The purely distance format is the cheapest at USD 800–2,200. And the most limited in outcome. A certificate is obtainable. The right to independent practice is effectively not.
Without in-person work with an instructor and live respondents, a graduate cannot conduct tests correctly. Therefore the format makes sense only as a supplement to an in-person course. Or as preparation beforehand.
Most training centres are in Kyiv. Another major centre operates in Lviv. In-person programmes are also available through travelling formats. The instructor comes to the participant's city with their equipment. The travelling format costs USD 1,000–1,500 more.
When choosing a course, clarify the important details. Which educational institution registers your certificate. What accreditation level it has (minimum Level 4). What documents you will actually receive. For example, the difference between a diploma from a state-accredited university and a certificate from a private centre can be decisive. Particularly if forensic work is planned.
| Format | Cost (USD) | Duration |
|---|---|---|
| Basic in-person course | 1,200 – 3,000 | 4–6 weeks |
| Extended programme | 3,500 – 5,000 | 6–10 weeks |
| Online course (theory only) | 800 – 2,200 | 2–8 weeks |
| Continuing education for practitioners | 400 – 1,400 | 1–3 weeks |
| Individual one-to-one programme | 5,000 – 10,000+ | by agreement |
Beyond the course itself, budget for additional expenses. Your own polygraph (without one, practice is impossible). Professional literature. Analysis software. Also — conferences and association membership.
The real cost of entry into the profession in Ukraine is around USD 5,000–8,000 including equipment. However, for the expert trajectory with international certification, the budget over a 5–7 year horizon reaches USD 15,000–40,000.
Plan to work on the international market or in the judicial practice of EU countries? You will most likely need a certificate recognised outside Ukraine.
Two main standards apply here. The American APA and the European EPA. Both demand significantly more hours and money than Ukrainian programmes. However, they open a different level of career possibilities.
APA is the strictest and most authoritative programme. Founded in 1966. Recognised as the world's largest professional association of polygraph examiners.
For the certificate you must complete an accredited school. Minimum 400 instructional hours. That equals 10–17 weeks of full-time intensive training. The basic programme cost is USD 5,000–6,500. Plus accommodation, food, flights and equipment.
After school the graduate must complete an internship. At least 200 polygraph examinations under the oversight of an experienced mentor. Without this internship the certificate is not confirmed. The right to independent practice does not arise.
Most APA-accredited schools are located in the United States. These are California, Georgia, Arizona and other states. Outside the US, APA accreditation is held by isolated programmes — in Israel, Canada, Australia and a few others. The full registry is published on the APA's official website.
To maintain membership, APA requires 30 hours of continuing education every two years. These are conferences, seminars, online courses. In US states with state polygraph licensing, loss of APA membership automatically means loss of the right to practise.
The European Polygraph Association unites more than 500 specialists from 35 countries. It is considered the world's second most influential association after APA. Training is delivered through the European Polygraph Academy in several formats.
The basic Polygraph Fundamentals — 200 hours and 10 ECTS credits. Professional certification in forensic psychophysiology — 525 hours and 20 credits. The Master in Forensic Psychophysiology programme — 750 hours and 25 ECTS. This is Europe's first programme with such a load. And the only one conferring instructor status.
The format is blended. A 24/7 online theory platform plus in-person practicums. Cost — USD 1,500–3,900 for the theory module. Plus 500–800 for the practicum. That is roughly 80% cheaper than APA programmes.
EPA membership requires at least 400 hours of accredited forensic psychophysiological training. Also — a character reference. And three months of provisional membership before permanent status.
The UK has no domestic APA-accredited schools. So British specialists train in the US or in Europe. Then they join national associations (UKPA, BPS or BEPA).
A feature of the UK market is the Offender Management Act of 2007. Under it, polygraph testing of released sex offenders on probation is mandatory. This creates steady demand for examiners with PCSOT specialisation.
In Poland, the Czech Republic, Germany and other continental European countries, no major national schools have emerged. Practising specialists receive their training at an APA-accredited school. Or through the European Polygraph Academy. Then they join EPA or local professional associations.
State licensing of polygraph examiners, as in the US, does not exist in most European countries. So membership in EPA or APA serves as the formal right to practise.
| Parameter | APA (USA) | EPA (Europe) | Ukrainian course |
|---|---|---|---|
| Training volume | from 400 hours | 200–750 hours | 250–300 hours |
| Duration | 10–17 weeks | blended format | 4–6 weeks |
| Tuition cost | 5,000 – 6,500 USD | 1,500 – 3,900 USD | 1,200 – 3,000 USD |
| Internship | 200 supervised tests | in-person practicum | 15–20 tests + 6 mo. mentorship |
| Geographic recognition | US, Canada, English-speaking world | 35 European countries | Ukraine |
| Continuing education | 30 hours every 2 years | regular continuing education | membership renewal every 3 years |
Regardless of country or centre, a professional programme is built around six foundational blocks. If a course's advertising omits any of these — that is reason to question the programme's quality. The conceptual "skeleton" looks like this:
The foundation of the whole profession. This is the autonomic nervous system. The "fight or flight" response. The mechanism of cognitive load during deception. Also — the difference between relevant and irrelevant physiological reactions.
It also includes studying neuroscience models of lying. For instance, the work of Sean Spence and Daniel Langleben. Plus statistical methods of credibility assessment. And the work of classic authors — Lykken, Bartol and others.
Without this block, the examiner cannot tell a reaction to emotional arousal from a reaction to actual deception. Any conclusion would be a coin flip.
There are three families. CQT (Comparison Question Test) is the most widely used in the US and Europe. It rests on comparing the physiological reaction to a relevant question with the reaction to a probable-lie control question.
GKT/CIT (Concealed Information Test) works differently. The subject is presented with a series of alternatives. A significant reaction emerges only for the alternative known to the true participant.
R/I (relevant/irrelevant) is historically the oldest methodology. Today it is used in limited contexts of personnel screening.
An examiner must command all three methodologies. Also understand when to apply each. Choosing the wrong methodology nullifies the test result regardless of recording quality.
The legal and ethical framework is mandatory for any serious course. This is data protection legislation. The rules of informed consent. Professional ethics. The impermissibility of coercion.
For specialists planning forensic work, a separate module is added. Forensic expert practice. Producing reports for court. The status of private expert opinion in civil and criminal cases.
In Europe, GDPR — the General Data Protection Regulation — is compulsory. Its violation can cost tens of thousands of euros in fines.
Equipment operation is the practical mastery of polygraph systems. In Ukraine this usually means three types of devices. The Ukrainian RUBICON. The American Lafayette LX5000 and LX6 (market classics). And the Axciton (premium segment).
Students learn to attach sensors correctly. These are pneumographs, EDA sensors, blood pressure cuff, plethysmograph, motion sensor. Then — calibrate recording channels. Work with visualisation software. Detect artefacts and countermeasure attempts.
Chart construction and analysis is the programme's most difficult block. Students learn numerical scoring of reactions. Different scales are used: Empirical Scoring System, Federal Zone Comparison Technique, 7-Position Scale.
Then individual scores are synthesised into an overall finding. That is "Deceptive" (signs of deception). Or "Non-Deceptive" (no signs). Or "Inconclusive" (uncertain). This is where the gap between an experienced expert and a novice is felt most acutely.
The programme concludes with the sixth block — practice on real subjects. In a quality programme this takes at least 30–40% of total time. The student conducts real tests under instructor supervision. Reviews their own mistakes. Masters pre-test interview technique.
No lecture can substitute for the first stress of attaching sensors to a living person. Therefore practice is an essential element of any real programme.
Completing the course is half the path. What you receive in hand and how the market recognises it depends on the certification scheme. Real professional weight comes from how you handle the internship and portfolio afterwards.
Ukrainian certification still coexists with international. Professional associations issue a polygraph examiner ID valid for three years. Renewal is via membership confirmation. They also include the graduate in the national specialist registry.
Since 2025 a national professional standard "Polygraph Examiner" has been in force. Approved by the National Qualifications Agency. It is a step toward future state licensing of the profession.
The highest tier in Ukraine is forensic expert attestation. A separate procedure for specialists planning to issue findings in court. Conducted by specialised commissions of the Ministry of Justice. Requires documented work experience and a specialised examination.
APA certification works differently. The graduate of an accredited school receives Provisional Member status. For the duration of the internship of 200 supervised examinations. Upon completion the status automatically transitions to Full Member.
The APA certificate is recognised in most English-speaking countries. It is often required as a formal condition in major international corporate projects.
EPA certification follows European logic. After completing an approved programme (minimum 400 hours) and submitting a final project, the candidate receives provisional membership for three months. With no ethics violations the status becomes permanent.
Maintenance of membership requires regular continuing education. Also — adherence to the Code of Ethics and GDPR.
Perhaps the narrowest bottleneck of the entire path. And its most underestimated stage. Good Ukrainian centres provide built-in practice. That is 20–30 "live" tests within the course. Plus six months of mentor support after graduation.
However, even after that a graduate needs about 100–200 supervised tests. To reach a steady high level. APA strictly requires 200 supervised examinations. Without them the certificate is not confirmed.
Realistic paths for accumulating practice after a Ukrainian course:
Independent practice without proper supervision is technically possible. However, it is categorically not recommended. It almost guarantees serious mistakes in the first years. The cost of those mistakes is high — both for the client and for the specialist's reputation.
Independent practice is impossible without an own polygraph. The basic kit includes a sensor unit (amplifier). Five sensors. Recording and analysis software. Also — consumables.
The main models on the market:
To the device cost you should add software. Often bundled, but updates are frequently paid.
Also — professional literature and research database subscriptions (USD 200–500 per year). Professional association dues (USD 200–400 per year). Professional liability insurance (mandatory in the US, advisable in Ukraine).
The total budget for launching private practice is around USD 8,000–25,000. Including marketing, office rent and legal setup.
In the Ukrainian variant — 4–6 weeks of basic course. Plus six months of mentor support. Plus 6–12 months of assistant work alongside an active expert. Together about 1–1.5 years to confident independent practice.
In the APA system — 10–17 weeks of school. Plus 1–2 years of internship (200 supervised tests). Together 1.5–2.5 years to the same level.
To reach expert status — add another 3–5 years of consistent practice. Also 300+ independent examinations under your belt. International APA or EPA certification. Forensic expert attestation.
The full route "from zero to recognised expert" is 5–7 years. That figure is no exaggeration. Specialists who have walked the entire distance are noticeably scarcer on the Ukrainian market than course graduates. That is why their findings carry weight.
A basic start in the Ukrainian profession is USD 5,000–8,000 including equipment. That is enough for mass-market formats: personnel screening, family checks, simple corporate cases.
The expert trajectory costs USD 15,000–40,000 over a 5–7 year horizon. This includes international certification, premium equipment, annual conferences, insurance and continuing education.
It is a substantial sum. However, it returns through the average expert-level income. It is usually 3–5 times higher than a beginner's.
"Reaching self-sustainability" in polygraph examination is achievable in 1.5–2 years. With serious commitment and access to practice. Without access to real cases the path stretches out. Training without subsequent internship turns the diploma into a decorative paper certificate.
Staff positions sit in the range of UAH 25,000–65,000 per month. The segment distribution looks like this:
Private practice is more complex. A single session for a private client in Kyiv costs from UAH 2,000 to 5,000+. At a load of 15–20 sessions per month this yields UAH 30,000–100,000 in gross income. Before deducting rent, taxes and equipment expenses.
Experts with established reputations can earn substantially more. That is already a trajectory with international certification and many years of practice.
The figures are an order of magnitude higher. Explained both by a more developed system and by higher market rates overall.
Entry-level positions in police and law enforcement — USD 35,000–65,000 per year. The industry average is around USD 75,000. Federal positions (CIA, FBI, NSA, Department of Defense) — USD 54,000–118,000.
Experienced private practitioners earn USD 75,000–150,000. An established private practice with reputation (after three years and more) brings USD 120,000–200,000 and above. Per-test fees — USD 150–500 for newcomers. And USD 500–2,500 for experienced private experts.
| Segment | Ukraine (UAH/month) | USA (USD/year) |
|---|---|---|
| Beginner in agency | 25,000 – 35,000 | 35,000 – 65,000 |
| Corporate examiner | 30,000 – 55,000 | 60,000 – 90,000 |
| Military examiner | 50,000 – 65,000 | 54,000 – 118,000 (federal) |
| Private practice (experienced) | 60,000 – 100,000+ | 75,000 – 150,000 |
| Expert with international reputation | from 150,000+ | 120,000 – 200,000+ |
| Per-test price | 2,000 – 5,000+ UAH | 150 – 2,500 USD |
Income in polygraph examination depends on three factors. Each operates independently.
Specialisation. Forensic experts and corporate investigators earn more than family specialists.
Geography. Rates are higher in major cities and lower in the provinces.
Reputation. Clients queue up for a known expert. A newcomer needs several years to build a portfolio and word-of-mouth.
Forecasts for the US market are encouraging. By the late 2020s a shortage of private practitioners is expected. Driven by mass retirement of the 1960s generation. This creates a favourable environment for entering the profession right now. A similar, though less acute, trend is observed on the Ukrainian market.
Polygraph examination is a rapidly developing field. Every two to three years new analysis methodologies appear. Software is updated. Significant research is published.
Professional associations (APA, EPA, national bodies) formally require continuing education. However, even without a formal requirement, refusing to keep up turns a specialist into a "dinosaur." Such a specialist works with outdated methodologies at clearly lower accuracy.
Such a reputation erodes noticeably faster than it was built. Contemporary clients — particularly corporate and forensic ones — ask questions about applied methodologies. And verify their currency.
Standard formats of continuing education:
A single seminar typically costs USD 300–1,500. A conference with accommodation — USD 1,500–3,500. A serious specialist budgets USD 2,000–5,000 per year for continuing training.
This means the profession has no finishing line. A high-level expert is someone who keeps learning as long as they keep working. Therefore the calibre of their findings grows over time rather than stagnating at the level of their final exam.
Expert polygraph examination is a profession for a certain type of person. Analytical thinking. Pronounced emotional stability. Willingness to undertake long and expensive preparation. And — equally importantly — willingness to work with human deception, fear and pain day after day.
It is not "easy money." Nor a "fast start." The real path from the first lesson to the level of an expert takes 5–7 years of consistent practice. Such an expert is sought for forensic examinations and major corporate projects. The budget is USD 15,000–40,000 across all stages.
If you are prepared to walk this path to the end — the market will open up. The shortage of expert-level specialists in Ukraine and Europe persists. Professional certification is moving toward a more formal level thanks to the national standard. Demand from business, lawyers and private clients for findings "with weight" is steadily growing.
On the other hand, the picture may be different. If time and money are limited. If you need a polygraph examination "once, for a specific situation." Then ordering a session from an active expert will be tens of times cheaper and faster. Than walking the expert route from scratch yourself.
Polygraph examination is a profession for those who enjoy the process. Working with people, physiology and data. Not merely an instrument for one-off resolution of someone else's problem. If that caveat matters — the better strategy is obvious. Turn to a specialist who has the path already behind them. Focus your own time and resources on what is truly yours.
Important clarification: The Union of Polygraph Examiners of Ukraine is a professional service organisation. We do not provide training for polygraph examiners and do not issue training certificates. If you need to undergo a lie detector examination in Ukraine or Europe, consult our register of certified examiners, or commission a forensic psychophysiological examination — please write or call us at the contacts listed.
The basic course in Ukraine runs 4–6 weeks. Six months of mentor support is added to it. Also — 6–12 months of assistant work. This path brings you to the level of a practising specialist within 1–1.5 years.
To reach expert level, add another 3–5 years of practice. Plus 300+ independent examinations. International certification (APA or EPA). And forensic expert attestation. Together — 5–7 years of consistent work.
Yes, but with limitations. Most Ukrainian centres accept candidates with military or law enforcement experience through an abbreviated scheme. In the US, APA requires at least an associate's degree plus two years of investigative experience.
However, employers in the corporate segment generally prefer specialists with higher education in psychology, law or medicine. That yields a higher starting salary.
The basic course is USD 1,200–3,000. Extended programmes with international certification — USD 3,500–5,000. Individual programmes — USD 5,000–10,000 and above.
Equipment costs are added to this. A RUBICON polygraph from USD 3,200. Lafayette from USD 6,000. Plus professional literature and association membership. The full budget to start practising is around USD 5,000–8,000.
No direct automatic recognition. A Ukrainian certificate is valid within Ukraine. For work in the US, EU or UK, additional APA or EPA certification will be required.
In practice, many Ukrainian specialists supplement the basic course with a 400-hour EPA programme. They gain full eligibility for European practice. Those working with US corporations go through one of the APA-accredited schools.
Staff positions pay UAH 25,000–65,000 per month. Military examiners with the AFU earn UAH 50,000–65,000. Private practice varies: the average income of an experienced specialist at 15–20 sessions per month is UAH 60,000–100,000.
Income depends directly on specialisation, geography and reputation. Experts handling forensic and major corporate cases can earn many times more.
The most affordable option for the Ukrainian market is the domestic RUBICON at USD 3,200–3,850. Especially for course graduates who receive a discount.
If working with international clients — the Lafayette LX5000 or LX6 (USD 6,000–8,500). That is the world's most widespread standard. The Axciton premium segment is generally a choice for already-experienced specialists.
Realistic options: assistant at an active agency, assistant to an experienced examiner, staff position in a large company's security service. Also — project teams for corporate investigations.
Many training centres include built-in mentor support for six months after graduation. That is the best window for an active search for a first internship. After it closes, a graduate faces the market alone.
The testing itself requires personal contact. Attaching sensors and recording physiological reactions. A remote polygraph does not physically exist. Despite isolated commercial offerings without scientific validation.
However, adjacent tasks are routinely performed remotely. These are report writing, session preparation, client briefing, legal consultations. A "travelling" examiner format is also available — bringing equipment to a client.
What Questions Are Asked on a Polygraph: Types, Examples and What Cannot Be Asked One of the main fears before a lie...
Read more →
How to Choose a Reliable Polygraph Examiner: 7 Signs of a True Professional A lie detector test is a serious procedure...
Read more →
How a Lie Detector Works: Physiology, Technology, and Stages of a Polygraph Test The term "lie detector" is familiar to...
Read more →Услуги проверки на детекторе лжи доступны по всей Украине — выберите свой город
1
2
