Scanner Lie Detector Headset
A brilliant toy for parties, the headset works by apparently reading changes in your pulse. Assuming you’re not a professional liar who can keep totally calm even when fibbing, the scanner should be able to detect how your body is feeling when you are asked certain questions.
If the light flashes green, the Kokoro Scanner believes you are telling the truth. Get a yellow light and it says you aren’t telling the whole truth. But get a red light and you have been exposed as a liar!