that is not the case. It is not about effort: The court has ruled that single point of time monitoring is fine, but continuous monitoring (a covertly placed gps tracker, e.g.) is a violation of privacy.

Why didn't you have a problem with a single person doing little with a lot of effort?

All I'm saying is it should have been a problem at that point.. not just because it's easy now to do it at a high scale.