[secalex]

Yes, the Tesla charging port has a data link that allows Superchargers to speak directly to the battery's firmware. There is almost certainly "Tesla DRM" built into the handshake between the S and the Supercharger, although like all DRM it could probably be reversed engineered and compatible systems created. That's a lot of fun when you are trying to copy a Blu-Ray, less fun when you are dealing with 100kW.