The shoes will also charge mobile phones

Washington: University of Wisconsin-Madison Department of Engineering has created a shoe for the poor and backward areas and soldiers who can go fill charge mobile devices.
The energy to produce tiles, can be made under the bags and shoes, but experts claim that moves the prepared shoes (kaynytk) into electrical energy that can very effectively to human activity.
University of Wisconsin scientists say that is the very energy that can be made, 10 watts of optical energy as a human activity that discarded shoes in advance of the actual temperature. But let's not underestimate the power of 20 watts may be a charge for advanced mobile devices