I parked in a garage in downtown Tacoma, Washington. The only option to pay was via an app. So I downloaded the app (by walking outside to where there was cell service, because I was, you know, underground in a garage) at which point it threw an internal server error when adding my card. There was no attendant on duty, and no way to pay with a credit card. So I left - just drove out of the garage. Then a few months later I got a fine for $75 for not paying. Then I called them to dispute it, and they offered to waive most of it, but it was still more than if I had been able to pay the fee initially.

I'm sure it was sold to the garage as a way to "maximize revenue and unlock operational efficiency". And sure enough, look, the revenue number is up and to the right. Working as designed.