What? With that attitude do you not believe in regulating anything? No laws are perfect but that's not a valid argument against having them.
There's a big difference in a company legally operating a facial tracking system and a company illegally operating one.
In the case of the illegal one they have to hide it, it's much harder to profit from and thus would be less widespread. In the case of the legal one they can freely advertise their services and easily setup their system anywhere that local governments don't create hurdles.
You can make all the foolish laws you like and there will still be data and cameras everywhere in public places. Where the data comes from is irrelevant, it will be available.
Edit: Are you going to ban cameras in public places? Facebook? Cellphones? Satellites?
There's a big difference in a company legally operating a facial tracking system and a company illegally operating one.
In the case of the illegal one they have to hide it, it's much harder to profit from and thus would be less widespread. In the case of the legal one they can freely advertise their services and easily setup their system anywhere that local governments don't create hurdles.