Automatic number plate reader (ANPR on the iPhone or iPad) that checks a number plate against a List.
This provides the ideal means for handling event parking where people have pre-paid.
A text file "PlateList.csv" containing a list of number plates and owners can be loaded into the application via iTunes FileSharing.
Format for PlateList.csv is:
REG123B, Owner Info

with one line per license plate.

Imense Car Check UK allows a PlateList of up to 250k of registration data and allows unlimited license plate reads and checks against this list.

Ideal for telling who is parked in a building carpark or for managing parking for a small event.

The application also allows read plates to be added to the list along with the time so you can keep track of number plates in your street.