Prepaid Parking

The driver on his mobile phone asks for the free available parking lots in the wider area, or in a specific address he would like to park.
On his mobile, he is offered the nearest available parking spaces.
He chooses the parking space and pays before he arrives.
When he parks, he confirms with a click from his mobile phone that he is the one who has prepaid the space.
The next driver, who will ask for vacancies, will see that this parking spaces is prepaid and he can not park.
At the same time lights a red light at this location, so that if someone wants to park it can be seen that this location is not available.
Also the system will not let him pay, informing him that this position is prepaid and he will have to find another one.