Truthfully, I don't know! Especially for younger kids though, there's usually at least an adult in the room, right? Even when they're visiting a friend, the other parent is there to step in and check on them occasionally?

I guess once you hand your teenager a smart phone (and all their friends have one too!) all bets are off. That's new, and wasn't a thing when I grew up. We were rural and on the tail end of dial-up, so I couldn't get online at home without someone hearing the modem. That sure limited my attempts to do so without permission!