What next? People going on a killing spree with their cars and driving people over.
Therefore I think it would be sensible to make people have to acquire some sort of license to drive a car.
Also the car should be registered to their name and have some kind of license number so it is possible to track it back to the owner.
Also people should have to renew their license from time to time to determine that they are still mentally and physically capable to drive their car.
i know it sounds ridiculous, but cars are dangerous in the wrong hands.
Fair enough, but cars are mainstream and drunk driving is a huge cause of deaths in the US so it's not as if after people get their liscence they always drive saftley. Some people just rush to where they have to go be that work or a meeting. Also, if a 3D printing liscence is as easy as car liscense it only proves my point more.
As I stated above you would really need a lot of police technology on the thing like passkeys, always online, and gun recongition software. Of course the shooter will probably look up a youtube video of how to hack his 3D printer and bypass the security system. This is assuming that this issue is even adressed when they go into production for commercial use because the average person isn't going to make guns with the intent of killing people.