Please bear with me while I try and explain myself, my reasoning is a little convoluted, still I think it’s a valid idea and am very interested in what you think of it. I have no science of physics background, forgive me.
Firstly, one of the problems I see with current gun detection devices is that they are really only metal detectors. So your keys, belt buckle, or that plate in your head, can set them off. Slow going at the airport, and not very cost effective for schools and such, requires attendents etc.
Next let me say that my Dad worked in a division of a company that made special finishes for cars. So I am aware that they add a marker to their paint colours, hardly a secret (just play along), which enable police, csi, etc, to identify exact models from two colours of red paint say.
And thirdly, when I go to my grocery store there is something in the cart that triggers the wheels to lock if I try and take it off the lot. And it works too!
My idea is sort of a combination of these three things;
Manufacturers of guns are forced to include in the alloy a ‘tell’, something easily detected and difficult to confuse with any other metal object. But it should be in the alloy not just a plug of something or a chip that could easily be disabled or removed. This should make detection much simpler in my opinion.
At airports and schools you set up an archway type of entry about 4 feet deep with a turnstile entry and a bullet proof glass exit door. Fence school yards so there is only one or two entries through just such a gateway. Enter with a gun, both gates lock, photo taken, alarm sounds. Do the same at the airport entry. NOT at each gate, just where you first enter the airport. No attendents required.
Granted there would be costs involved but I’m pretty sure you could sell a lot of chocolate bars in any community in this country this week with this as your objective.
It would be a great deterent at the very least. Isn’t that really why schools are being targeted in this way, easy access?
Granted there’s still a fair number of the old weapons out there but you got to start somewhere, right?
What do you see as being wrong with this good idea?