Israeli company Makh-Shevet has launched a lie detector package which uses voice stress analysis, claiming it is the first product of its kind. The ?personal truth verifier? software, Truster, has gone on sale. The company?s chief executive Tamir Segal claimed the $179 kit, for sale over the Internet, is the first affordable lie detector program for the home PC. A microphone is plugged into the PC and attached to a telephone. Truster samples the voice on the other end of the telephone and analyses it via a set of algorithms. It is claimed that the software can verify the truth and detect deception whilst the person is talking. Stress in the voice is detected by the software and messages are flashed up on the PC screen ranging from ?telling the truth? and ?confused? to ?sarcastic?, ?exaggeration? and ?lie?. Once the phone call has ended the software creates a detailed profile of the report. Truster works on the fact that when people are under stress their voice frequencies change because blood is being pumped faster through the body and breathing patterns alter. Truster gives these patterns variables, enters them into a master equation and comes up with a conclusion. Specialists believe Truster may be over simplifying the situation and it should be viewed more for amusement than as a definitive lie detector. Makh-Shevet, however, maintains it has had a lot of interest from insurance companies, who are using it to verify if people are putting in false or exaggerated claims.
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