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Techno Gadgets

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http://www.wired.com, By Nathan Hurst

Using your smartphone to take a photo of a document is one of those things that seems like it should be easy, but just isn’t. First you have to futz with the angle and the distance. Then there’s the flash: on, it’s too bright and washed out; off, it’

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http://www.popsci.com, By Rebecca Boyle

Piezoelectric devices promise to draw power from your footsteps or heartbeat, change the channel on your TV, and complete all sorts of helpful tasks — but they generally work in the nano-mechanical realm, requiring synthetic materials to function.

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