What if you could gain access to someone's head and being able to reveal their thoughts in seconds?
Have the spectator think of a number, a name or drawing anything. They write it on a pack of gum, close it and return it to you. The moment you grab the gum, you instantly gain access to the secret information concealed within. It's a jaw dropping mentalism effect that is simple to learn and perform. A modern mind reading device for the modern magician.
Never leave your house without a pack of gum.