Lie detector uses heat cameras to detect the truth
13 September 2011 Last updated at 14:03 BST
British scientists have developed a new lie detection test using a heat camera that records the flow of blood around the eyes.
The researchers then combine results with a computer programme which monitors tiny changes in facial expressions
A preliminary study involving 40 volunteers found the system to be 70% accurate in identifying liars.
Nick Higham spoke to scientists behind the test at Bradford University.