In the United States, Google is launching the Pixel Watch 3’s “lost pulse detection” feature

Google has begun launching the loss of pulse detection capability of Pixel Watch 3 devices in the United States. The feature does exactly what it describes: it checks the pulse when the watch is on the wrist, and if it is determined that the pulse has stopped, it will call emergency services. When the table was launched last year, it debuted in several European countries, but it did not receive approval from the U.S. Food and Drug Administration until February this year.

This function uses a concurrent passive algorithm to check whether the pulse exists at a rate once per second. If a lack of pulses is detected, the active sensor will activate to check for signals that may indicate false detection, for example, if you no longer wear a watch. Only then will the device enter the Phase 1 Alert phase, where it will send you a haptic notification asking you to click on a promotional video that says “I’m OK.” If you don’t respond, it will increase the alarm and add sound, counting down to give you time to respond before calling emergency services.

Google says the feature can save you your features when there are important situations every second, such as when you have a heart or respiratory arrest or poisoning. In such a situation, you can get help immediately only if you see what happens around someone. This is not always possible: As Google explains, half of the pulse events related to cardiac arrest is unwise. With this feature, you may be getting involved faster if you do need help and prevent more permanent damage to your body.