

And given that more vehicles are coming equipped with the same capability, it’s not clear how many of us even need it. Crash detection inevitably will save some lives by sensing wrecks and summoning help when people can’t.īut like built-in airbags, most of us will never see the feature in action. There is one notable industry first in the Series 8, and that’s crash detection. The Series 8 uses the temperature sensors, by the way, to help home in on your sleep stages. Others have been tracking sleep stages for a few years, and it’s so nice that Apple’s doing it now as well. The other is sleep stage tracking, which is a far better gauge of sleep quality than logging how long you stayed in bed and how much you moved during the night. The Apple Watch shows more light or core sleep and less deep. The sensors are being used to deliver more precise ovulation tracking and forecasting for those who ovulate. The data below is a daily average over seven days of sleep tracking, where both devices tracked sleep cycles on the same nights. The first is a pair of temperature sensors, one on each side to help pinpoint skin temp variations by weeding out environmental influences. Scroll through the list and tap on the Fitbit device you have, or sign up for Just the app to track your steps with your iPhone.


There are a couple of capabilities that are new to Apple, if not to wearables.
