Would you use the the world’s first home body scanner for fitness tracking? If you have a hard enough time stomaching your body in the mirror, then having it scanned while nude is definitely not going to be fun.
Naked is a full-length mirror embedded with sensors that capture your 3D body model. Using the Naked companion app, you can track your measurements, body fat %, and weight. Naked also highlights areas where you are gaining or losing muscle/fat and lets you create custom time-lapses of your body.