TECH - Device Turns Your Sneaker into a Portable Cell Phone Charger

Anthony Mutua kinetic energy crystal chip" in a sneaker that generates energy as the sole bends connects to your phone via a long cable so you can charge your phone in your pocket while you stroll -  can be used in any type of shoe and can be transferred from one shoe to another depending on which pair you want to wear that day.
http://www.treehugger.com/gadgets/sneaker-charges-your-cell-phone-while-you-walk.html