iOS WatchOS5 - how to detect programmatically if Apple Watch was on the wrist (worn) at specific time interval?
问题 I'm interested if there is some HealthKit or other data source I can query to know if the Apple Watch was worn/in contact with the wrist at a given time interval. Currently I'm relying on HealthKit query for HeartRate and it appears that if I get no heart rate readings within a certain window, then the watch was most likely off the wrist or charging. Is there a better way to detect if the Apple Watch was worn on the wrist? The problem with this method is that it is not very descriptive - if