The Truth Detector Spy Watch. $15.99. Oh please let this work, Santa, please let it work!
‘Just ask the person you’re testing to hold their index and middle fingers against the Truth Detector Spy Watch’s bio-feedback sensors. With their fingers still on the sensors, ask them a question. As they answer, press the SET button once, which brings up a chart. The more bars appear on the screen, the less likely it is they are being honest. Look for other clues, such as rapid eye movement or a flushed face to help you decide.’