My wife and I sleep in twin adjustable beds, that way we can have our head and feet at different heights. I have the sleep monitor on my side and have had it for a few years now. I always wondered why the end time is always an hour or two off. Last night I went to bed around midnight and got up at 8. The wife went to bed at 1035 and I read the data today. It shows that I went to bed at 1035 and got up at 1130 then went to bed at midnight and got up at 7 am.
I made sense, this thing is reading my wife as well as me. That is so strange. the beds touch each other, but the sensor is under my edge of the bed, that isn't great but I can deal with it. Should Apple or someone else have a monitor I might spring for it. I don't mind the data and I then have to correct it, but shouldn't the sensor pad, just read what is directly above it?