Here in Sweden, the use of license plate scanners has become the norm for basically all parking houses, bridge tolls and road tolls. Even if you don't install the app or become a "member" of whatever system they are using, the license plate scanners is still used to detect when you enter or leave, and in some cases they automatically look up your home address to send you the bill with zero interaction with the driver…
You either have to create and account and register your vehicles by license plate, or you get a toll in the mail that must be paid either by mail or online.
I got behind on a few of these and got fined, I think maybe 5x the price tacked on.
I would love to just pay in cash each time I use an infrequenlty-crossed bridge.