Charge Battery at a Flick of your Finger..

Basically how it works is it slot for finger contains micro motors that convert the motion into electricity.Designers Song Teaho and Hyejin Lee may not call this a “green” concept, but finger powered batteries are eco-friendly. If your cell phone is running low on battery power, you pull out the battery and spin it around your index finger. It will be recharged long enough to let you have a conversation or to get to a electrical charger. It would be great to see this developed to last longer.