[fnordfnordfnord]

>Also, all it takes is a picture of your license plate as you go through a toll an any anonymity is gone

No, because a prepaid eztag wouldn't mail a statement of your whereabouts to your home/office.

[refurb]

What? If they have a picture of your plate they have the address the vehicle registration is sent to. If it's a rental, they can get renter info pretty easily.