At a typical pediatric visit, parents and clinicians examine where a child falls on growth charts that compare their height and weight to national averages.

WBM detects behavior patterns derived from raw sensor data, which can include significant information about an individual's health. PPG, meanwhile, can recognize immediate physiological changes.

“G.M. monitored and sold people’s precise geolocation data and driver behavior information, sometimes as often as every three seconds,” said Lina M. Khan, the chair of the F.T.C.

"GM monitored and sold people's precise geolocation data and driver behavior information, sometimes as often as every three seconds," said Lina M. Khan, the chair of the FTC.