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Broadcasting power would surely not be permitted by the FCC. The other concept NatCh describes is called induction, but parts for it are still quite large and I don't know how it would interfere with the display processes of eink. Some electric cars that I've tried had such a system to recharge batteries, no electrocution possible. It really is a clever process.
As for wireless acquisition of data, great where you can get it, but you will need some access to prerecorded data in remote areas, flash memory is still a necessity. On board flash with induction type transmission? Imagine putting a document next to your computer and they update all by themselves, but don't forget your unsecured book by your neighbor's! Then again a reader would still be slave to a computer. The real challenge is to make it independant.
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