On Monday, the US Patent and Trademark Office released a patent for Samsung originally filed back in 2015. The patent outlines a feature integrated into a smartwatch's strap that would be able to measure body composition. With this, a user could measure body fat percentage. A body composition device uses bioelectrical impedance analysis (BIA) which calculates a ratio between fat and moisture by using a low-power AC current and analyze the electrical resistance between adipose tissues and non-adipose tissues. According to the drawings in the patent. There are two electrodes on the inside...