quoted from the patent itself:
"Players are urged to face the screen, either by themselves or with friends, as they grasp their wands firmly in one hand. With gentle or vigorous motions, players then wave their wands back and forth to elicit a response from the game. A camera is trained on the action, and records the movement of the balls and wands as they are waved back and forth in front of the screen. Occasionally, players will be urged to snap their wands and balls together, to create a pair, which then has greater functionality."
LOL!