Itemised Bills

Public Key Encryption secures journey data in the Location Processing Service server. This data can only be related to a particular driver, for purposes of itemised bills, with the permission of the driver.

Specifically, the journey data is stored (for a limited time) on the Location Processing Service database indexed with a pseudo-random journey ID that was generted by the vehicle using a secret key. The only other person with the key is the driver, who can therefore reconstruct the journey IDs on his PC and thus retrieve the journey details.

Drivers can choose billing options to match their privacy preferences:

• No itemised bills = greatest privacy. The driver destroys his secret key.
• The driver creates an itemised bill on-line, on his PC, by accessing journey data in the Location Processing Service server, using his driver-owned secret key.
• A driver who is unconcerned about privacy can get itemised bill by post, by deliberately revealing secret key to the billing service.

Itemised Bill on Driver's PC