The Nokia E-Cu is an interesting concept phone; it's a cellphone that is powered by heat. In my experience, I know that my phone seems to generate a lot of heat that could probably be put to use.
Conceived by London designer by Patrick Hyland, the Nokia E-Cu features "an embedded thermogenerator that converts heat from any source into energy to charge the phone," according to Psfk. Its dry earth pattern is copper-based to allow for better conductivity.
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