-=Car Parking Monitoring System=-
Hi there folks, i need some idea regarding on the problems that the user might encounter during the transaction is on going. Like for example, the customer might change his mind on parking but he was already timed-in in the system.

Thanks for the share guys, im just a newbie and i want some brainstorming ideas.

@If this kind of post is not allowed, just let me know. Thanks

Lost ticket? Car parked but never leaves? Car parked during some kind of emergeny or system failure when the entry barrier was left open? Car exiting but credit card refused/no cash/etc so unable to complete payment but is now blocked in by a line pf cars stck behind it?
(I've seen all these in the car park at my local airport!)