Solar panels built into iDevice covers.
Apple's new patent application about a next generation iPad Cover that described integrating solar panels right into the cover. To be honest, like most, it seemed like an idea that could be viable "sometime" down the road, like 2016. But apparently the race is on to get this to market sooner. Not only is Apple working on this idea, but so is a GaAs solar material maker called Alta Devices.
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