Zak by Bryan CodecasaYour browser does not support the video tag. Zak is not a switcher, but a convincer that will allow you to amplify the strength of your effect with cards, cash, post it Is it possible that the card signed by the spectator is your prediction from the beginning? Is it possible that the paper chosen and inserted in the pocket of your jacket returns to the deck? Yes, with Zak this is possible, you can also use Zak with money and post it.