Last week we reported on an Apple invention relating to the iPhone or iPad Home Button doubling as a gaming joystick. It was so simple and yet so right. I had noted at the end of that report that it was a nice feature, even though it wasn't a total gaming solution. I guess the gaming gods wanted to remind us today that Apple indeed has other technology on hand to advance game-play functionality on iDevices. The U.S. Patent Office published a patent application today revealing an invention that covers iDevices having sensors built into the backside of the unit giving gamers controller inputs resembling standard gamepad functionality.