We all face the frustrating situation of having our cell-phone batteries run dry while out of home and away from a charging socket.

 

Now you don’t need to worry yourself about things like that anymore. That’s if all goes well for Nokia, the Finnish cellular giant who have recently filed a US patent last week for a self charging handset that powers itself up using energy generated by the owner’s motion. Nokia is dreaming about a phone in the future that will have its heavier components like the radio transmitter circuit and battery on a sturdy frame which will move along two sets of rails that allow it to move upwards, downwards and sideways. The end of each rail will have strips of strips of piezoelectric crystals that will generate a current when compressed by the frame. So all you need to do is slip the phone in your pocket and it’ll charge itself up as you walk about.

[Newscientist]