In case it helps other people, my solution has worked great the last year. I have a Rad beacon in each of my wife’s car and my car, as well as at the entrance to our house from the garage. I use the Geofency app on iOS to detect the beacons and send a webhook to Stringify. My Stringify flows then talk to SmartThings. This has solved all my presence glitches and is working great. When I’m detected in the car, for example, I’m obviously not at home. Plus, it lets me trigger events as soon as I get in the car to head home from work (I turn the kitchen pendant light green so my wife knows I’m on my way home: helps her time dinner prep better). Anyways, that’s worked well for me without the need for BeaconThings.