yeah it’s pretty easy. ifttt android app has some interesting abilities that use a channel called “android” One of the abilities is to create an action based on whether you connect or disconnect from a specific wifi. That’s what i did. I had it trigger a smartthings switch which flipped a virtual presence sensor. There is a “presence toggle” device handler by impliciter available in this thread: Presence Detection using DD-WRT Router Script . It is a virtual switch that also shows up as a presence sensor. easy peasy.