VIN number interrogated when the cable connects to the car as part of the handshake would be ideal but appreciate that required changes in the car (probably) - I haven't looked at the standards deeply enough to know whether they do this already and just don't use it.This is an excellent idea, do you envisage this working with a camera / number plate recognition system? If so, it would probably be necessary to work alongside the other chargepoint manufacturers to adopt an industry standard. Perhaps we could work together with members of speak EV to design a fully interoperable system which we could rollout. Does this sound like something you would be interested in ? Obviously there will be huge challenges but im sure with the right people we can make positive steps in the right direction.
ANPR would be another way to do it, although easy to spoof? VIN number from the car itself encrypted along with some unique signature analysis type of thing would be best I would have thought.