Alongside the new A7 main chip unveiled in the iPhone 5s this week, Apple also featured a new "M7" motion coprocessor designed to capture motion data to support new features such as health and fitness applications. As Apple notes on its feature page, the chip can also enhance mapping and location functions, helping the iPhone 5s sense and interpret movement.The new M7 coprocessor is like a sidekick to the A7 chip. It’s designed specifically to measure motion data from the accelerometer, gyroscope, and compass — a task that would normally fall to the A7 chip. But M7 is much more efficient at it. Now fitness apps that track physical activity can access that data from the M7 coprocessor without constantly engaging the A7 chip. So they require less battery power. M7 knows when you’re walking, running, or even
