Your friends will not only be amazed at this trick, they\’ll wonder why their iPhones don\’t have scanners, too. Let a volunteer spread a deck of cards out on a table, face up. You hold the iPhone over one card, and the scanner light \”reads\” the card. You push the print button, and lo and behold, the card appears on your screen. Of course, your friends will want you to do it over and over again, and of course you can, each time with whatever card they pick.