This is a very simple gimmick that can enable you to perform miracles! From a borrowed deck, a card is freely chosen and signed. You then spring the cards on any surface and only one card gets stuck to it - yes, it's the chosen card! It can be done with a book - phone - shoe - bottle - your shirt ...etc. The sky is the limit.
It's very practical, fun, and easy to do. No Forces - No breaks - No crimps - the deck is borrowed.
NOTE: you may need to buy something to perform the effect, but there's a good chance you already have it at home.