Card Aura Trick 3 of the Amazing Card Magic Routine for the iPhone. By now you have twice shown the spectator tricks in which you touch the iPhone. Now is their turn to have some fun. "This time the magic will all happen in your hands!", you tell them as you hand over the iPhone. Tell the spectator to any card on the screen via a double tap. Let them change their mind as many times as they like. With a simple wave of your finger you announce triumphantly the name.