We’ve seen similar concepts before, but until such technology becomes commonplace, we’re still excited every time someone comes up with such a design. We’re talking about this kinetic charger that has been integrated into a pair of shoes, which allows you to hook your device up via USB cable, and the integrated nanogeneration system will begin to juice your device’s battery when you walk or enjoy any kind of sports. Maybe in the future we’ll all be charging our portable devices via kinetic energy generated while we walk.