Why would it.. I have DNA.
You are an Ashkenazi Jew, not a Hebrew. That means your DNA is that of a polish european who's ancestors converted to a religion. Therefor you are retarded, because you associate yourself with Israel when you're from poland, you associate yourself with a religion when you're an atheist, and you call yourself "God's chsen people" when you're not an Israelite.
I don't know if or how that would be possible, but if it was, then it would definitely be a great example of defence.
Spiderman web launcher with a nanotech guidance system that is designed to find the barrel and clog it with adhesive polymere nanotubes.
You're an idiot. Guns don't "defend". They spit toxic chunks of lead into other humans. If you think that's what "defence" is then there is only one explanation: you're retarded.
I can't believe they haven't invented a device to disable firearms. You could wear it on your wrist like an Assassin's hidden blade and if someone puts a gun to your balls you can just activate the device.