You would need to be a Dick Tracy to track somebody who only uses cash, but does not use ID.
I’m familiar with how pervasive cameras are getting. They are developing cameras and software, where they can tell you were speeding between any two points by comparing your plate at one point and measuring the length of time it took for you to get to the second point and they can send you a ticket if you make too good a time.
They’ve bee doing that in Europe a while now.
Brave new world we’re in. Privacy is almost gone. Manhood and God, too.