Wifi would probably be the easiest. Either hide a dummy AP in the house or use a combination of multiple neighbors APs. If you don't see any beacon frames from the dummy SSID for a 30 second period then lock/shred the computer.
Wifi 5/6 sometimes rake up to a couple of minutes to get online (DFS and whatever) so 30 seconds is like smoking near an open can of gasoline: mostly fine but when it's not...
