Apple has filed a patent on motion based charging, that would be working on the principles of electromagnetic induction. In theory that would mean that users can simply charge their phones while walking or making any sort of movement that will cause the induction process to start making electricity and charge the battery. Theoretically is means you would never run out of battery as long as you continue moving. This could be serious competition to NFC that comes with new smartphones today; maybe it would even surpass it. However, this is not as simple as it sounds. To cause induction you need a copper coil and a magnet that will move inside of it. If you consider that you need to create this inside the iPhone you have to wonder where on earth will they put it?