Any card is chosen, signed, & placed back into the deck. The spectator takes out his wallet. His signed card is found in his wallet!
The U.C.C.U. allows you to control one or multiple cards while the spectator shuffles the deck. The cards can be produced from the deck, or found in virtually any impossible location, such as the spectator's wallet.
Does not require magnets, pulls, gimmicked cards, special wallets, stooges.
It can be any deck of cards!
*Requires a button - so a button down shirt is necessary for the gimmick. However, the technique could still work with alternative clothing.