I think there's a big difference between a large enterprise's access points and those that cover a city. First off if your employer is spying on you, you at le

I think there's a big difference between a large enterprise's access points and those that cover a city. First off if your employer is spying on you, you at least have a chance to quit and get another job. Further that new job might not require that you move to avoid surveillance. Also many/most employers don't care enough about specifically where all their employees are to do such a thing. Finally a lot of the employers who do care enough have implemented ID badges. ID badges don't necessarily give you a happy feeling inside since they make it obvious that management doesn't trust everyone equally. But at least the tracking that they do is explicit: you know you're getting logged every time you badge through a door. Imagine the outcry if a city implemented a badge ID system that you needed just to travel anywhere. That literally conjures images of "Papers, please" and the like. The problem is that they have -- without any real, widespread public knowledge or approval -- implemented a small portion of a fairly draconian we-track-you-everywhere kind of system.