датчик для измерения электрического сопротивления участка тела(bioimpedance n. Usually followed by 'sensor'. Essentially refers to the measurement of body composition and water content by passing an electrical current through the body. It's real science – smart scales use bioimpedance to measure muscle mass vs fat – but the technique has also been used to make wilder, unproven claims such as measuring glucose levels.
'More)
