Apple Watch to give hypertension alerts

APPLE WATCH USERS in India will gain access to a new hypertension notifications feature that can alert them if signs of chronic high blood pressure are detected.

- NANDAGOPAL RAJAN

The feature uses a machine learning algorithm to analyse PPG (photoplethysmography) data from the watch’s optical heart sensors over a 30-day period. It’s designed specifically for users with undiagnosed hypertension—the Apple Watch won’t measure blood pressure directly or display readings on the watch face.