While complex methods already existed in laboratories, the foundations of a body analysis method exploiting the body's electrical properties were laid down by Dr. A.L Thomasset in the 1970's. Known under the name of "bioelectric impedance measurement" this technique was adapted to be integrated into the scale.
Its working relies on injecting a very low intensity current (absolutely safe and painless) into the feet, and the simultaneous measurement of electrical resistance met by this current.As the fatty tissue is not a conductor, the resistance is in proportion to the quantity of the body's lean mass.

Several equations are used to deduct the lean mass, then you calculate the quantity of body fat by subtracting the lean mass from the weight.
Important note: the use of the impedance measurement appliance is forbidden to wearers of electronic implants such as pacemakers.

For everyone else

Get on the scale, wait for the bar to fill up, step off the scale. The scale turns on and off automatically and has automatic user recognition, you need do nothing but stand still.

The scale will measure your weight and calculate your lean mass, fat mass and BMI. Your readings are then automatically and instantaneously sent to your PC, laptop or iPhone (wifi router required).