There are two failure modes of "smart guns": 1) fails to unlock: "wild animal or another human killed me first" 2) too easy to unlock: "a child undid the lock

There are two failure modes of "smart guns": 1) fails to unlock: "wild animal or another human killed me first" 2) too easy to unlock: "a child undid the lock and shot another child" Just like self-driving cars, even if you get a 10x or 100x net reduction in deaths, the first time someone dies because your "smart gun" failed, there will be a huge press cycle and mass hysteria. And probably lawsuits.