I think I figured out why my neighbor's kid and some random friend were walking around my backyard yesterday with their phones in their faces while I was mowing. I've never been so confused while performing lawn maintenance. Never see this kid at all, but all of the sudden they're in every yard walking around with their phones. Strange stuff. I was going to ask them "WTF?" but they seemed harmless enough.
One of my sons is currently into this game, and you're right. Someone is going to wander somewhere they shouldn't, and will be shot.