We are using it for presence detection, but not just for those that live in the house. Our life 360 'circle' allows my parents to arrive and automatically perform actions (disarm alarm) but they are not users of HA since there is no real need.
We were already using L360 when I started using HA.
Thanks for the link, I googled looking for issues because I know there was one earlier this year that required a fix. Might be time to figure out a better way, but it's just another thing to mess with :)
Doesn't the companion app have gps access? I haven't looked into it very closely since I was already using life360. I thought there was a tracking sensor as part of the phone (separate from life360) that may be able to be used? I do rather like the randomized mac address setting on our phones.