Apple has filed for a patent that is shockingly similar to the Nintendo patent on their Wii-mote. It's unclear what the final use of the patent will be, and its common knowledge that giant companies, especially Apple patent all kinds of technology and developments, just so that other companies can't grab an upperhand on the big guy.
There are also references to videogame applications in the patent application, so who knows.
joystiq.com: Apple Wiimote-esque patent revealed
New Apple Patent Similar to Wii-mote
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