Forget taxi metering, the big elephant in the room is moving all land records to GPS co-ordinate based mapping system. Survey grade GPS accuracy can be of 3ft, good enough for land records.
This the precursor what's going to happen with land records moving to GPS based mapping. The real intent of the Govt. is to scuttle all innovations that's going to curtail corruption citing some archaic laws.
Its extremely easy to implement a system to allow for all property registration be completely self serviced. The original owner with his UID and the ID of the property fires a request to transfer to another person having his own UID, pays the tax and completes the transaction with a confirmation ID from the government.
But then why would govt want to do it, registrars are source of huge money for political parties.