Mobile 2 Energy (M2E) is a startup that is building a charger that will be powered by your movement. Remember the Forever Flashlights that were being sold via infomercials? This new charger seems to be using a similar technology and is based on Faraday's law. M2E is a venture built on research done at the Idaho National Laboratories and its technology finds use not only in every-day consumer products like chargers but also is used by the military.
According to the company - 2 days of ordinary movement will build enough electricity in the device to be able to charge a mobile phone completely. Not sure when the product will actually be available on the store shelves. What a cool way to go green.
My only wish for this product, is that they should make the charger a little more like a pedometer. That would make it a fun and an useful device.
Charger on the M2E website: http://www.m2epower.com/apps/mobile.htm
M2E company website: http://www.m2epower.com/index.htm
Video explaining the technology: http://www.m2epower.com/multimedia/overview.htm