Thought Transmitter by John Cornelius

Imagine, you have a spectator write down the name of a playing card, a number, or a symbol on a post-it note which is inside of a totally opaque wallet. The spectator now closes the wallet and wraps it with a rubber band. You never open the wallet but you know instantly what the spectator has written down. The spectator could even seal the wallet in a plastic bag and you still have access to the information!

• No sliding or moving parts!
• Everything may be freely handled by spectators without fear of detection!
• No impressions, carbon paper, magnets, center tears or sleights!
• Fools even the most knowledgeable of magicians or mentalists