Like a traffic light this chip changes colour in your hand, from RED to YELLOW and back again. After this colour change demonstration place the chip in the spectator's closed hand. They open their hand the chip is GREEN on BOTH sides! Immediately you borrow a coin. Take the chip from the spectator and place it in your fist with the coin. After a little "by-play" you remove the coin and drop it in your pocket. A snap, and the coin has returned into the hand with the Chip. You now remove the chip and drop it into your pocket. A snap, and you open your hand to show NOTHING! Both hands are completely empty!