IGun

Guns should have electronic chip, which would allow their use only when majority of people around approve it. Think IGun. Now if a terrorist kills a guard and gets his gun then he wont be able to use it on hostages, unless they themselves allow his gun-use by pressing "confirm" on their smartphone.

That way lone gunman and a-few-terrorists scenarios will get eliminated, but when a large group of people comes out to protest, totalitarian government wont be able to stop them from exercising their democratic rights.

Same way people would be able to hire a sheriff and give him right to police some locality, without fearing he will use the gun against to subvert democratic procedures.

What do you think?

>>14
web of trust won't solve car accidents as it's not really a trust problem, but that's not relevant here. the problem with OP-defined web of trust for guns is that it is a proximity-based web of trust. webs of trust are vulnerable by design tu 50%+1 attacks, which means that the bigger they are, the harder they are to hax. bitcoin network is big. proximity-based network of 5 anuses who happen to be standing on the street is small.