On-board NN moderates all interactions. Moral NN core must be updated montlhy to support latest moral and legal checks by NN. This core reports when you are doing something suspicious. State, municipal, border and patrol random checks for proper attestation of implants. Of course manufacture and installation of such implants is licensed and tightly regulated. Think of children.

It's not very different from smartphone. But now instead of modem you have nn "firmware" with broad capabilities to warn privacy and ethics police when you are out of line. Recording in the wrong place, or looking at a crime and not reporting. "Off mode" won't fly for a gun, and your implant threatens children, so I don't believe this could be delegated to the user.