> How would you specify this regulation?

I'd regulate the database side of things.

What makes mass surveillance systems such as Flock, Ring, etc., incredibly objectionable isn't really the cameras. It's the databases they feed into that allow for the unprecedented invasion into our daily lives. That's also true for non-camera surveillance systems. The concentration and correlation of individually innocuous information adds up to an egregious assault on us all. That's the part that needs heavy restriction and regulation.