So the way this works is that the cop has a transponder that the gun listens to, and if the signal is too weak the gun won't work?
I give that about a week before its hacked. All you need to do is overpower the signal with garbage.
And how long before the developement of a "wide area remote jammers" (to be be used only during times of civil disorder) that would render every weapon, other than those used by the anointed, nonfiring?
Nah, California would never authorize such a device