On the ellusionist custom decks (and im sure on the ones here too) there is the name of a card under the barcode written with letters and numbers, like 2 O7 5P4D3s (2 of spades). how do you guys utilize this into a trick, if you do? like force it on them and then reveal it? and are laymen amazed by this? does it get good reactions? i was just wondering if its a worthwile effect or not.