> And you can't have it both ways here–it can't be "be a parent: control and limit your kids' on the internet" and "you have to give your kids complete privacy on the internet".

Well I don't think I said otherwise, but not only is this rather absolute, it's not true. I don't see how limiting screen time, for example, precludes respecting their privacy.

May I ask: Why is it important to know their account handles?