The next-generation A7 processor in the iPhone 5S will be roughly 31 percent faster than the current A6, according to a tweet by Fox News' Clayton Morris. His sources have also mentioned a "separate chip devoted to motion tracking". It's unclear how Apple would use motion tracking abilities, but it could be developing a new control scheme that uses motion gestures like Samsung has built into its Galaxy S series of smartphones. A profile of Jony Ive by Bloomberg earlier this year may support this hypothesis: Longer term, Ive also has shown interest in altering how people control their computers. He has met with makers of gesture technology that lets people navigate their gadgets by moving their hands -- without touching the screen, said a personal familiar with those interactions.