How Lie Detectors Legally Work

Video Description: It's inventors called it "infallible" -- but they weren't hooked up to the polygraph when they boasted of this controversial device.

Related Article Subjects: anxiety, breathing, clientelevision, fear of detection, heart rate, inadmissible evidence, infallible, lie detector, nervous, perspiration, polygraph, reliability, skin response, sweat, use at trial, valid test result