Why are the keys on my FUSE not always responsive?

The touchpoints on your FUSE are only active when your arm is horizontal (parallel to the ground), with the FUSE display facing upward. This is to prevent you from accidentally triggering the touch points while you're exercising, or if your arm brushes against something. If you're holding your arm at an angle you may find that nothing happens when you press the touchpoints; straighten your arm and you'll be good!