Let me explain some other things about current reality in America.
Democracy in the US has been severely eroded by big money. Federal gun control legislation that would not violate the 2nd amendment often doesn't even see the light of day due to threats from the NRA, - an organization that had $256,000,000 in revenues back in 2012. It doesn't matter if the legislation would be supported by the majority of Americans or not.
As to the "Gun Nut" comment. The constitution rightfully states that you can't take away somebody's right to bear arms because their behavior is merely "suspicious", or you don't like their politics, or you don't like their hobbies. As long as they have no previous history of felonies and they are mentally competent, they have that right.
Reality is though that lots of folks are shot for no legitimate reason by people with no felony record,- either intentionally or even accidentally. So, what to do? Fortunately the Constitution doesn't prevent the development of technology that would limit the ability of a weapon intended for self defense to be used for another purpose. Why would anyone be against that as long as using it for self defense is not unreasonably inhibited?
Note: I'm not saying wearing a watch is the right solution.