Fing announced today IFTTT integration to the fingbox (currently in beta). I currently have one sitting here and got in on the beta. I setup a quick rule and some virtual presence devices so that it would toggle them on and off based on my phones presence.
I've only done one test so far. When I left home it didn't mark me away. But when we drove back up it picked up my girlfriends phone right away. I must have messed up something.
But it seems to be using more than just network presence to detect the devices. Turning on/off the wifi doesn't change presence.
I'll have to do more testing in the coming days. But always good to have more options.