This is pretty much why this law is stupid. The purported purpose is to capture more criminals or create more evidence to solve more crimes. However, being so ridiculously trivial to defeat (replace firing pin which is permissible under this law, scatter someone else’s brass at crime scene), I fail to see how this will work.
Not only that, this technology is not employed by any major manufacturer of firearms. In CA, new handguns have to be submitted for testing to be determined “not unsafe”. Only handguns with this designation can be added to the Roster. Only handguns that are on the Roster may be sold through an FFL. By requiring all semi-automatic handguns to have this tech, gun control advocates have succeeded in banning any new semi-automatic handguns in CA. I suspect this was the goal anyways.
I’m suspicious how this declaration by the Attorney General was made. The patent on this technology was held by one group, and was renewed by gun rights advocates along the way as well to prevent the law from taking effect. I suspect there is some shenanigans about the recent declaration, but time, and litigation, will tell.