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Smile! It's You-Better-Be-Candid Camera MANCHESTER, U.K., Jan. 28, 2003 (CBS) British scientists claim they have invented the world's most sophisticated lie detector. It's called the 'Silent Talker,' and it's said to be over 80% accurate in ferreting out liars. That's roughly comparable to the polygraph, but this system doesn't involve wiring subjects up. They just look into a camera connected to a laptop computer, while software analyzes thousands of tiny facial movements. The assumption for both polygraphs and the Silent Talker is that lying triggers a sense of conflict and anxiety in the person being questioned. This leads to physiological change, for the polygraph, and facial movements. The 'Silent Talker' also delivers degrees of lying — complete lie and half-lie...
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