Apple wants to track every user movement for health, AR, and more

Apple wants to know every time you move a muscle in any part of your body, so it can more accurately build a picture of your fitness, and also possibly map your location in a room better. Apple already has technology such as accelerometers in the Apple Watch that mean it's able to automatically detect you're walking, even though you forgot to turn on the Outdoor Walk workout. It also recently applied for a patent for a camera on the Apple Watch which, as well as for photography, was about detect...