I think the question has more to do with HOW the smartgun is doing it. In other words, is there a metal band that wraps around the top of the trigger and constricts when commanded to fire, or is it integrated into the weapon itself, requiring no trigger action at all. Also, is there a difference between internal and external on that?
Because if it were something mechanical like a metal band constricting, it could potentially still be fired. If it were something integrated into the electronic firing mechanism, bricking it might take the gun out entirely.
At least that's what I gathered.