Own logo
Original price was: €399.99.€299.99Current price is: €299.99.
Discount promotion until September 1, 2026
Plaque with your own logo
Customized back plaque
for your corporate identity
Dr. Essam Nader
Dr. Essam Nader is a professional polygraph examiner with more than 11 years of experience in conducting lie detector tests. As the operator of luegendetektortest.net, he supports private individuals, companies and the media with modern polygraphs and 3D facial analysis.
Recommended accessories
Product
Description
Cost
Recommendation
Effect
Limited to
3D camera facial recognition
The 3D facial analysis using a 3D camera captures the finest facial movements and expressions during the examination and supplements the physiological measurement data. Examiners receive even more comprehensive details of the test process for the subsequent evaluation.
Cost
449,99€
White label own logo
White-label option for your professional brand presence. On request, we supply the polygraph with your own logo and branding so that the system integrates seamlessly into your corporate identity.
Cost
299,99€
Polygraph travel bag
The custom-fit carrying bag reliably protects your polygraph and all accessories against knocks, dust and damage – ideal for professional use on the go and for comfortable transport.
Cost
59,99€
AI evaluation – graphs
AI-supported graph evaluation. Our intelligent analysis supports examiners in evaluating the recorded polygraph data, recognizes relevant patterns in the measurement curves and clearly highlights conspicuous reactions.
Cost
189,99€
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Rated by customers on
Works as it was promised to me on phone! Highly appreciate your support. Enjoy your weekend and thank you. Best Wishes Jas
I didn't know that I could buy a professional lie detector in Europe without having to order it from the USA. I had researched for quite a while – and it's made in Germany. It arrived promptly. It's really worth the upgrade from my old lie detector device, which I once bought in America 20 years ago.
Can someone tell me how to install it? I called you, but I still don't understand it. Send me an e-mail at: liamdario@gmail.com.
I read an interview about an examiner who uses the polygraph from lie-detector.info, so I got interested about the product. I own a Praxis Psychological Services, PLLC since many years. Since there always has been a demand from my clients to take part in lie detector test with a polygraph, I made the decision to buy one. I was a little sceptical about the price. If you do a little research you find manufactors of polygraphs that are on the market over 20 years. The prices are at least $8.000 minimum and can easily go up to over $20.000. A real polygraph with 6 physiological sensors for $4000 only? I gave it a try! And all I can say it was perfect decision. The software is outstanding! Easy to use for novice users and with expert or advanced settings. Great invention! Superb polygraph. Thank you guys.
I bought the lie detector for my cabinet 3 weeks ago. It is as precise as my other 7k Euro equipment that I own. They even assisted me in order to set it up. I recomand it to anyone interested in having a professional lie detector.
I have bought the polygraph to measure physiological facts. The senors are good quality and the software is very sensitive. Results are awesome. Well, I can recommend it from my side. Would be interesting to have a statement from an educated examiner.
Questions & answers
A polygraph (= “many writings”) or lie detector is a device that continuously and simultaneously measures and records the course of physical parameters such as pulse, breathing or the electrical conductivity of a person's skin during questioning.
Yes. The Polygraph Pro is compact, light (~2 kg) and can easily be set up, whether at home or when traveling – all it needs is a stable surface and a USB cable connection to a laptop or PC.
In principle, the lie detector can be used in any situation in which you need certainty about whether a statement is true. Whether as a fidelity test in a marriage or relationship, to solve a theft or simply as a party game – there are many possible uses.
More than 100 scientific studies on the accuracy of lie detector tests have been published. According to them, the accuracy of a properly conducted lie detector test is between 95% and 100%.
Being nervous before a lie detector test is nothing unusual. When the test is carried out professionally, nervousness cannot influence the result – lies certainly can.
Provided the person conducting the questioning is trained and qualified to carry out the test, this is very unlikely. The lie detector is a medical device that records changes in a person's autonomic reactivity while they are being questioned. If a person tries to control their behavior in order to falsify the result, this becomes obvious to a trained examiner when looking at the polygraph recording.
A complete polygraph test usually takes 3 to 4 hours. It begins with a detailed preliminary interview in which the facts of the case are discussed and the test questions are jointly defined and explained in detail. The polygraph examination is then carried out in several standardized measurement runs in order to create a reliable data basis for the subsequent evaluation.
The polygraph examiner then analyzes the recorded measurement data and discusses the results in detail with the person tested. A professional polygraph examination is not a short test, but a structured and scientifically established examination process that is carried out with the utmost care, precision and sufficient time.
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