Show a deck of cards that are white on both sides and ask the spectator to shuffle the first half of the deck. Next have them shuffle the second half of the deck. Pull out one card and have the spectator sign it. Fold the signed card into four parts. Now the magician will have the task of making people laugh. Give the spectator the folded card and have them hold the card in a fist. When the spectator opens the hand a smile is printed on the card!

- Everything can be examined, easy to do
- Anytime and anywhere
- Also use it in mentalism or close-up
- No adhesive, no glue, no wires, no sleeves
- Also useful with smartphone effect