In the future, charging your phone could be as easy as taking a walk

Pylatiuk, a researchers at the Karlsruhe Institute of Technology in Germany, wears a small device on his right leg as part of an experiment to see whether he can generate electricity with his body.

Christian Pylatiuk attaches a small device to his right leg and starts walking. The 200g instrument does start generating electricity as he moves, though not much - just a few microwatts. 

Pylatiuk and his colleagues at the Karlsruhe Institute of Technology (KIT) in Germany are among researchers around the world who are looking for solutions for so-called energy harvesting by movement.