Also referred to as «body composition monitors,» these scales usually use bioelectrical impedance analysis, which sends a small electrical current through your body, to measure your body fat, muscle mass, bone density, water weight, and more. (businessinsider.com)
Accuracy of bioelectrical impedance analysis to measure skeletal muscle mass.» (verywellfit.com)
Xiaomi says the scale uses «complex algorithms» in conjunction with Bioelectrical Impedance Analysis to analyze your body score, and it can store profiles for various members of your family (it can store up to 16 profiles). (androidcentral.com)