To generate the algorithm, data was collected from these new motion sensors at professional crash test labs with frequent passenger cars in simulated real-world accidents, including head-on, rear-stop, side-effect, and rollovers. Besides movement facts, Crash Detection takes advantage of the barometer, GPS, plus the microphone on apple iphone as inputs https://cesargkica.bloggerchest.com/26735137/the-smart-trick-of-stinky-apple-watch-band-that-nobody-is-discussing