Wouldn’t it be possible to build an app that connects to eg. Garmin Connect and ask if the watch owner is asleep or awake? (using sleep cycle detection) I don’t know if the watch register that in the beginning of the sleep cycle or if it is only registered after you wake up? Maybe it could be triggered to check? In any case the wake up time could be useful to determine that someone just woke up, right?
Anyone who have more information about this? (preferable for Garmin)