pulse oximetry

Also: Study lends support to smartphone PPG pulse oximetry; Happify Health adds new language support to digitial mental health programs.

The new sensor brings Apple up to speed with its competitors, but could lead to bigger announcements down the road.

Mayo Clinic's Apple Watch app for doctors As the Apple Watch begins to find its way into the hands of consumers, it's also becoming clearer that there's a lot of interest in the health features of the device.