FORENSICS: Lie Detectors
Patented: History of Inventions
Polygraph Tests Are Not Used in Courts
The threshold that you have to reach if you want to be using these things in the real world is so much higher. We don't use lie detected polygraph tests, which rely on physiological responses to things or things like fMRI tests. None of those are at the moment used in criminal cases to convict someone based solely on that evidence. In the US they're not admissible in court, but where they are often used is in the stages before a case goes to trial to try and extract a confession from a suspect. And also then the accuracy rates, so, yeah, say they get it like nine times out of 10. It's great, but one out of 10 is a very
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