Wait, how would tracking bad kids be less illegal? I think putting bad children on state sanctions list might very well be deserved for some of them, but a bit overkill... Imagine not doing your homework leading to being officially sanctioned by EU governments or the UN... though I'm sure that's a pretty convincing way to make someone do their homework.
I would not optimise for performance yo early. All the building blocks are here. Let's leave "scaling issues" to the Christmas OPS team! Some cloud provider must have a North Pole region, right?
