You will get
Imagine... your spectator selects 4 cards from their own deck, shuffles the cards and spreads these cards face down on the table out of your sight... imagine that at the very beginning you have left him a piece of cardboard he will touch and only he will be allowed to read it at the very end of the trick...
Imagine he freely selects the cards one by one (without anybody's knowledge, as they have just been mixed) and places them... sometimes under the glass, sometimes under the telephone, inside the deck or even on his body. Imagine he takes hold of the piece of cardboard and precisely reads where the cards have been places. Imagine something more incredible: he can even read on the cardboard the very position he placed his card inside the deck!
An astounding trick that enables you to become a real mind reader.
Easy to do... this will soon become your favorite experience!