> Motion sensors themselves are really energy-cheap but the main CPU needs to be on to sample them, which basically means that if you want continuous mobility detection you're going to burn through your battery pretty quickly, which is why it isn't used much.
It's a coprocessor not a sensor, so it may operate independently of the CPU as far as continuously sampling the motion sensors is concerned. Presumably that requires much less power to do so.
I meant that on current phones the main CPU needs to be on, which is why motion suppression isn't used much. Apple added a separate processor to handle the motion sensing, thus offloading the main CPU, and saving energy.
> Of course it will used to augment/supplement GPS.
> Of course
What do you base this on? Could you give me an example where a separate motion processor would augment GPS?
It's a coprocessor not a sensor, so it may operate independently of the CPU as far as continuously sampling the motion sensors is concerned. Presumably that requires much less power to do so.
Of course it will used to augment/supplement GPS.