AI detects expressions to tell if people lie in court

From a raise of an eyebrow to a tilt of the head, we use several micro-movements when we're lying without even knowing it. Now, scientists have developed an artificial intelligence system that can detect these micro-expressions and detect if you're lying – and it's already'significantly better' than humans. The researchers hope their system could soon be used in courtrooms to tell if people on the stand are telling the truth. The researchers trained the AI to recognise five expressions known to indicate if someone is lying - frowning, eyebrows raising, lip corners turning up, lips protruded and head side turn. After watching 15 videos from courtrooms, DARE was then tested on whether it could tell if someone was lying in a final video.