New Lie Detector- Retrieve

This will retrieve the old polygraph machine, where the lie detector was connected to the suspect to see the change in his or her blood pressure, breath and sweat. The new lie detector can tell this by looking at the person through the infrared light to see how the colour changes when the sympathetic nervous system goes under sudden change. In this process there will be a rapid blood flow and an increase of temperature around the eyes and face. When someone isn’t telling a lie his or her face will stay its normal temperature colour, generally blue on the cheeks, green on the nose and chin and yellow on the forehead.  Yet when the person is lying it’s nose, chin, forehead and right beside the nose will turn red.