>> Soon anybody with a high-resolution camera and the right software will be able to determine your identity.
No. Software cannot do that. You need software PLUS access to some data set.
>> Tracking people in the real world might start to look more like it does online, causing changes to our behavior.
Ok. Stopped reading there. There is no comparison to online. I've got my VPN on atm and my user-agent spoofer just notified me that it was changing to some other random fib. I'll believe such statements when someone explains to me how Tor can be implemented in meatspace. Online and realworld are not the same.
(When we all have google glass nailed to our faces, will adblockers be a thing? I hate billboards.)