cool. I will have a look. Interesting. A combination of geofence and wifi, could be enough. I have a magnetic sensor at the main door and I will use them for the Presence in combination as well.
Regarding to the Networking binding, I have found this topic: iPhone Presence Detection with hping3 and ARP but it is from 2015. Is it working this procedure? I mean, I need a script to wake up my iphone every minute when is in sleep mode, otherwise, OH sees the iphone OFF and it seems that none at home.