Google (Pixel Watch)

Google Research creates passive heart rate monitoring system via smartphone camera

Google researchers introduced the PHRM system, which measures heart rate and resting pulse from facial video recorded by the front-facing smartphone camera in the background after unlocking. The system is based on deep learning and showed an error of less than 10% for people of all skin tones, comparable to wearable devices. This is the first large-scale demonstration of passive heart rate monitoring in everyday life.

Google/DeepMind Fitbit Google (Pixel Watch)