Apple has revealed a new feature for the iPhone 5s that will dramatically impact the way we use the phone as an exercise tool. The 5s introduces a new part called M7 which works alongside the phone's new 64-bit A7 processer. M7 is a motion co-processor that continually measures your personal motion data, with accelerometer, gyroscope and compass support.
The M7 co-processor works with the new CoreMotion API, which identifies user movements and optimizes their experience based on contextual awareness. Nike is already in the process of creating a new app to showcase these features called Nike+ Move that uses the M7 chip and your phone's GPS to keep track of your activities.