Police and intelligence agencies around the world have, for almost 100 years, relied on polygraphs as lie detectors to help convict criminals or unearth spies and traitors. The polygraph is beloved of the movies, with countless dramatic moments showing the guilty sweating profusely as they are hooked up. But the invention could soon be defunct. Researchers in Britain and the Netherlands have made a breakthrough, developing a method with a success rate in tests of over 70% that could be in use in police stations around the world within a decade. Rather than relying on facial tics, talking too much or waving of arms – all seen as tell-tale signs of lying – the new method involves monitoring full-body motions to provide an indicator of signs of guilty feelings.
When is the new lie detection method expected to work with over 70% accuracy?
It has already achieved this accuracy level in tests Within ten years Once it is modified to monitor movements of the entire body It is currently not known