What if charging your cell phone was as easy as sticking it in your pocket for a few hours? That’s the premise of theNokia E-Cu concept phone, developed by British designer Patrick Hyland. Hyland’s Nokia E-Cu (E for environment, Cu for Copper) phone features a copper exterior and a thermogenerator integrated interior that converts heat energy into electric energy.

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Theoretically, the phone could be charged on any hot surface–from a radiator to a pants pocket. But as we previously mentioned, the phone is still a concept – and we’ll probably see ideas like the piezoelectric powermake its way into futurecell phones before Nokia’s idea. However, we certainly look forward to the day when our body warmth alone can juice up our electronics!

Via Dezeen