Frequently Asked Questions


Deceiving the polygraph, misleading, outsmarting, or confusing it is impossible. The same applies to laptops and monitors, as they represent technology that executes clearly defined algorithms.

The polygraph is a complex and highly sensitive device. Modern polygraphs record up to nine reflexively changing psychophysiological parameters, ensuring high accuracy of results.

Errors in lie detection are not instrument errors but errors of the polygraph examiner. Insufficient qualification can lead to inaccurate results.

An experienced specialist cannot be deceived by medicinal blockers, ‘home remedies,’ or even specially trained individuals.

We are familiar with all the methods and means described on the internet and other sources for combating the polygraph: self-inflicted pain, sleep deprivation, ten cups of coffee/tea, sedatives, abstraction from reality, meditation. There are corresponding detection methods for each of these techniques.

If the polygraph examiner detects an attempt at resistance, it is clearly stated in the conclusion, and the client of the investigation makes appropriate decisions regarding the person who resisted.

Please, do not resist, do not complicate your life. An attempt at resistance will be detected, and you will have to seek justifications.

The results with a 99.9% accuracy claim are just a marketing trick used by some polygraph examiners aiming to attract clients by any means.

The actual, honest accuracy rate varies from 85% to 97%.

In each specific case, a polygraph examiner carefully analyzes the client’s situation and develops an individual testing system, avoiding the use of outdated templates.

The daily experience of over 700 members of the European Polygraph Association allows us to improve the methodology of conducting examinations, making us leaders in the field of lie detection throughout Europe.

The lie detector is completely safe!

When talking about possible harm to health, in most cases, it refers only to the potential exacerbation of chronic diseases.

Indeed, there are certain illnesses for which undergoing a polygraph examination is not recommended, including severe pathologies of the cardiovascular system and psychosomatic disorders.

That’s why each lie detector test includes a preliminary conversation in which possible contentious issues are clarified.

The lie detector examines memory and records psychophysiological reactions when presented with relevant stimuli.

The level of emotionality and the type of nervous system of the examinee do not affect the result because even in a highly emotional person, reactions indicative of deception will not be detected if there are no traces of the requested event in their memory.

The overall level of truthful answers from an emotional person may be high, but their reactions do not contain informative signs of attempting to conceal or distort information provided during the polygraph examination.

Only questions related to specific actions or events in the past that are stored in the memory of the examinee are presented in a polygraph examination.

It is appropriate to ask questions about facts, such as:

Did you steal money from the safe? Do you know where the stolen items are? Did you participate in a crime (fraud, assault, murder, rape)? Did you pass confidential information to third parties? Did you engage in sexual relations with others during marriage? Did you receive kickbacks from suppliers? Did you gather compromising information on the owner or company?

It is not advisable to ask questions about feelings, beliefs, attachments, predictions, and other subjective judgments, as these questions have an evaluative nature and are not subject to investigation with a high degree of reliability.

We will provide answers to specific factual questions but will not respond to questions related to feelings, future behavior, or moral convictions, as such questions do not fall within the scope of lie detection.

We use polygraphs that are powered by a USB input (5 volts – eliminating the possibility of electric shock) and do not include sensors that can cause discomfort or painful sensations during the research.

The interrogation of minors under the age of 14 is conducted exclusively with the consent and in the presence of their parents or guardians. Individuals aged 14 to 16 may be interrogated in cases of particularly serious crimes, also under the condition of the presence of parents or guardians.

The following individuals are not subject to polygraph examination:

  • Persons with pronounced physical or psychological exhaustion.
  • Individuals with mental illnesses or disorders.
  • Individuals with diseases of the cardiovascular or respiratory systems.
  • Persons in a state of alcohol or narcotic intoxication.
  • Pregnant individuals.
  • Employees of special services (with the written consent of the management).

The person undergoing the polygraph examination must have a passport or another photo ID document to verify their identity.

Additionally, everyone undergoing the examination is required to fill out and personally sign a voluntary written consent for the polygraph examination.

It is recommended to conduct a polygraph examination only with the participation of a polygraph examiner and the test subject if the respondent is of legal age and proficient in the language in which the testing will be conducted.

The presence of third parties is not prohibited, but it may negatively affect the accuracy of the results.

Conducting research on the customer’s premises is possible with the availability of a quiet room and maintaining room temperature. To conduct the research, a table, 2 chairs, and an electrical outlet are also required. The optimal room area is between 12 and 20 square meters.

The duration of the main part of the study, that is, the test itself, typically ranges from 60 to 120 minutes. During this stage, the individual answers the polygraph examiner’s questions, providing additional explanations if necessary.

Additionally, it is important to consider the preparation stage for the study and analysis, the time of which varies from one to several hours depending on complexity.

In any case, the findings from the study will be provided within 1 business day after the test is conducted.


Subject to investigation are all facts and knowledge that have been embedded in long-term human memory.

Rest assured that a person can remember, for example:

  • their involvement in a crime;
  • infidelity;
  • working for competitors;
  • receiving kickbacks and/or illicit earnings;
  • committing fraudulent actions.

To achieve the most reliable results, we recommend limiting the number of questions in one investigation to no more than five. Increasing the number of questions significantly reduces the accuracy of the obtained results.

The duration of the test is between 1 to 2 hours. A test duration exceeding 2 hours is not recommended, as it may lead to fatigue, and adaptation could result in the absence of informative reactions.

This means that, to answer one client’s question, the polygraph examiner utilizes a set of methodological techniques aimed at achieving the maximum reliability of the result. Screening (screening) checks are an exception, where the number of questions may exceed five but should not exceed 8-10.

In each specific case, after studying your situation, the polygraph examiner will propose the optimal number of questions with the most accurate formulations.

When addressing this question, it is essential to remember that a polygraph examination should only be conducted after obtaining written consent.

We recommend offering the polygraph test as an opportunity for the individual to refute any suspicions and affirm the accuracy of their statements. In any case, a person cannot be accused before undergoing the examination.

Discussing the potential assessment should be done calmly and rationally, while also emphasizing the benefits of taking the test.

A person can prepare for the examination, but deceiving it is impossible!

In any case, it is important to notify the person in advance about the polygraph examination.

Preparing for the test is impossible! On the internet, you can find various ways to “cheat” a lie detector, but in practice, they only assist an experienced polygraph examiner.

Before the test, a person may use various countermeasures, but all of them are known to experienced polygraph examiners and are encountered in everyday practice.

The polygraph is a complex and sensitive device that records up to nine modifiable reflex psychophysiological parameters, ensuring high accuracy of results.

Errors in the lie detector are not device errors but errors of the polygraph examiner. Insufficient qualification can lead to incorrect results.

An experienced specialist will not succumb to drug blockers, “folk remedies,” or even specially trained individuals.

We are aware of all methods of resisting polygraph tests, but resistance will be detected. Please do not complicate your life; such attempts will be identified, and then justifications will need to be sought.

Yes, it is possible.

Such examinations are conducted to confirm one’s innocence regarding a specific event or alleged wrongdoing.

Recently, there has been an increase in cases where candidates for certain positions initiate polygraph testing. Successful examination results provide a significant advantage for individuals over competitors.

After undergoing a polygraph examination, you will receive an official written report from the specialist.