Google is now implementing Loss of Pulse Detection in the US after yesterday’s April 2025 OTA update and Scam Detection.
Google is officially launching Loss of Pulse Detection in the US after receiving FDA approval, which was initially anticipated at the end of March. Last year, it became available throughout Europe.
Make sure your Pixel Watch 3’s Personal Safety Wear OS software is up to date before turning it on. 2025.03.19.x is the most recent version that is available on the Play Store.
Afterwards, go to the Pixel Watch companion app on your phone (version 3.4+) > Safety & emergency > Loss of Pulse Detection to start the set-up process.
Google tells us that it’s beginning to roll out today and will be fully available over the coming weeks.
A loss-of-pulse event is when your heart stops beating, which can happen during a cardiac arrest, respiratory or circulatory failure, overdose, or poisoning. Similar to Fall and Car Crash Detection, the Pixel Watch 3 will ask users to certify their safety when it detects something.
In the event that there is no reaction (or movement), the wearable will notify emergency personnel, give your location, and provide information about what is going on. The Pixel Watch 3‘s multipath heart rate monitor, additional sensors, and a “multi-check, AI-based algorithm” are all used by Loss of Pulse Detection.
According to the official statement, “Loss of Pulse Detection may not detect every instance of a loss of pulse and is not intended for users who require cardiac monitoring or who have pre-existing heart conditions.” It does not offer follow-up care or diagnose or treat any medical conditions.
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