"Parking meters took credit cards. But they weren’t actually connected to a live network at all times. The machine just confirmed the card number was valid and was not expired, then spit out a valid pass. So when my card number got stolen and replaced, I kept my old, canceled card.
Of course when the system tried to run the card later it would be declined. My car and I were long gone by then. Sadly they wised up and now it charges your card before giving you a pass."
pierrekrahn
Most of the time, the operator knew the number was a pay phone. After ~5 tries, we would get an operator who didn’t know or check that it was a pay phone.