4 ms·
I'm pretty sure that fall detection only activates when it senses rapid acceleration. Just because you stop moving doesn't mean you'll trigger fall detection.
by bobbylarrybobby 7y ago
I'm pretty sure that fall detection only activates when it senses rapid acceleration. Just because you stop moving doesn't mean you'll trigger fall detection.
- hollerith 7y agoEveryone knows what you mean, but the technically accurate account is that during normal use or while sitting still on a desk, the device's accelerometer registers an acceleration of approximately 1 g directed towards the center of the earth, and when the phone starts falling, the acceleration drops to approximately 0. (Then the acceleration will asymptotically approach 1 g again as the device's velocity approaches terminal velocity, but well before then the software will have determined that the device is in free fall.)
- arrrg 7y agoIt triggered for me after breaking really hard on my bike (not a fall). My hand must have experienced quite the rapid deceleration. That said, I don’t think it’s a problem in most situations but during winter I might not have reached my watch under several layers of clothing in time to cancel the countdown.