If you use these trackers and barge in "hey I saw what you did on the internet, you're in trouble." then you're doing it wrong. Kids need guidance. If you were negligent enough to let your kid roam the city without supervision, you SHOULD have a tracker on them. We're talking about little kids not 16+. Many young kids get themselves killed or groomed or into some kind of cult online. When that happens to young kids, parents are negligent. When 12 year olds get addicted to porn, negligence. You can guide your children without being an asshole. I know a lot of us grew up either completely neglected or completely terrified to make a mistake, but there is an in-between.