@north@xn--8r9a.com Not sure where you are in the world, but in the UK it's increasingly common for car parks to have number plate (license plate) scanners on entry & exit. When you get the entry ticket, that gets associated with your vehicle, then once you've paid at the machine you get a receipt ticket but that's only insurance if the scanner at the exit fails. Usually it just sees your number place, confirms the parking is paid for, and lifts the barrier. I wonder if your parking place is doing something similar although it sounds like you use an app not a paper ticket?