Another proposed system also puts the earphones to work -- though without the need for that giant charging post. Instead the headphones slip into an acoustic charger, which cause their speakers to vibrate, creating a current that charges the device. As ever, just because a patent application surfaces doesn't mean a final product will ever see the light of day -- and these methods (particularly that big charging post) do seem like a long way to go to shave off the precious millimeters that inductive charging traditionally brings. But hey, Apple's all about the svelte devices, and stranger things have certainly happened.
Apple inductive charging patent surfaces