I know they (casinos, in my area) have face-recognition software which is used to keep out known card cheaters etc. Combine that technology with this (an effort to have a near-ubiquitous facial identity system, publicly intended for advertising) and a sense of Big Brother really steps in...
Ehh, I'm just being paranoid. I remember though, back in the 80's, when we were discussing things like "The Beast" etc, and the general feeling was "oh, there's not enough infrastructure to support that level of surveillance/financial control" (my quote, btw).
And, here we are!