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Google has bought Senosis Health, a startup that turns smartphones into medical devices and collects various health stats, reports GeekWireThe Senosis apps can monitor lung health and hemoglobin counts, among other things, using functions on a smartphone including its accelerometer, microphone, flash and camera. For example, to measure the hemoglobin, Senosis’ app uses the phone’s flash to illuminate a user’s finger.

Shwetak Patel founded the company with four others from the University of Washington and it’s not the first time his ventures have been acquired. In 2015, Sears bought Patel’s WallyHome sensor technology that detects changes in moisture, temperature, and humidity.