Nokia E-Cu - a concept phone created by London-based designer Patrick Hilandom (Patrick Hyland), which can be recharged from the heat, being in your pocket. Integrated thermoelectric generator converts heat into electricity any source capable of charging the phone. (For example, if you put the phone on top of the radiator.)

The phone body is made of copper, on which are engraved heat sinks in the form of dried and cracked earth. Patrick says that every phone chargers produce 51,000 tons of emission of energy in the environment, in addition to greenhouse gases. The presence of a thermoelectric generator in the Nokia E-Cu is able to resolve this issue.