Eh, just talk to him? Don't erode on his privacy. I feel that is pretty anti-HN to install backdoors and tracking an adult. You own the house, make it clear yo

Eh, just talk to him? Don't erode on his privacy. I feel that is pretty anti-HN to install backdoors and tracking an adult. You own the house, make it clear you don't want this on your network. Other than, open up to therapy if what you find is truly too far off and you think he is not good from a mental health standpoint. Remember, your role is to help him. Not punish him or make him feel like a criminal. Connections are hard to make without being honest or upfront about the problem, it's going to take effort. Don't take the easy way out by avoiding to talk. If you damage the trust by snooping in or secretly doing something, then he is just going to feel more alienated.