Crash detection technology detects severe car crashes and alerts emergency services.

It's made possible thanks to sensors that can detect a car's motion, speed and other factors like pressure change and sound level.

It's a feature on the latest Apple iPhones and watches as well as Google's Pixel line of phones. 

Once a crash has been detected, the phone or watch will sound an alarm and display an alert.

If you are able to, you can continue the call to emergency services or disable it, but if you are unable to, your phone automatically makes the call after a short delay.

https://www.abc.net.au/news/2023-01-30/crash-detection-and-how-it-works/101905692

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