Apple introduced the feature when talking about the new Apple Watch Series 8, its new smartwatch. Crash detection uses two sensors to detect impacts and will automatically connect the person wearing it to emergency services, passing along their location info. It will also notify emergency contacts.
Watch this: Apple Watch Series 8 Can Detect Car Crashes
Those sensors include an axis gyroscope and high G-force accelerometer -- the iPhone 14 has a new set, as well. The company said it spent years studying vehicle impacts at crash test labs and focused on four main types of crashes: front, side, rear-end and rollover crashes.
Machine learning takes information from the sensors, as well as others like the watch's GPS and microphone to determine there's been a crash. It was trained on more than 1 billion hours of driving and crash data. The feature only runs when you're driving and all the data is processed on the device, Apple promised.