Alt text: Admiral Picard initiating the self-destruct sequence of the Stargazer by the vocal command, “Authorization: Picard, zero-zero-zero-destruct-zero”
Well he did say authorization picard which I imagine is like unlocking your secret vault with your personal key... I don't think the romulans would be able to say the same thing and get access right?
You can imagine the Romulans thinking that 0000 is just too stupid to pick for a PIN, so never tried it. When they find out, they'll be kicking themselves and wondering why the Federation is a formidable opponent.
carrying on the glorious tradition of Kirk's self desctruct code being '1A' I think the conceit is that there's a vocal recognition aspect along with just the spoken code
https://youtu.be/kOvuzrpHqwo