New York’s budget bill would require “blocking technology” on all 3D printers

bool isRestricted(uint8_t* /* data */) { return true; } // Might catch a few false positives

and

popup("This is a restricted model. If you are not in the state of New York, please flash the international firmware ([link]) to print restricted parts.");

It can also handle STL, step and all kinds of other formats.

If you have seen that other people have pointed it out, you have already seen my response, but I guess people keep repeating the question, so I need to repeat the answer. This regulation establishes a working group to investigate this technology. If the technical aspects are as difficult as you claim, the proposed regulation will basically be voided. Your concerns are already factored into the proposal and therefore aren't a valid argument against the proposal.

That said, the regulation also makes it sound like "implementing a check for a specific banned print" would be an acceptable outcome of this law. From page 11 of the actual proposal:

>(b) be authorized to create and maintain a library of firearms blue- print files and illegal firearm parts blueprint files, and maintain and update the library, including by adding new files that enable the three- dimensional printing of firearms or illegal firearm parts. In further- ance of this authorization, the division may designate another govern- ment agency or an academic or research institution in this state to assist with the creation and maintenance of the file library. The library shall be made available to three-dimensional printer manufactur- ers, vendors with demonstrated expertise in software development, or experts in computational design or public safety, for the development or improvement of blocking technology and firearm blueprint detection algo- rithms. The division shall establish safeguards to prevent unauthorized access to and misuse of the library and shall prohibit all persons who are granted access to the library from misusing, selling, disseminating, or otherwise publishing its contents.

Think of it like the early stages of internet copyright protections, the first step is just cross-referencing the design with a list of known banned designs. Just like an early Youtuber could have mirrored banned videos to bypass copyright detection, people will likely still be able to manipulate designs in certain ways to get past this sort of ban. That's ok. Regulation like this doesn't have to be 100% effective to still be worth doing. The goal here is to make it more difficult for some random person with no expertise to buy a 3d printer, download some files, and print a weapon.

I'm willing to admit that it's entirely possible that a full on-demand analysis of whether a shape could potentially be part of a gun might not currently be possible and it might be years before that becomes feasible, but until then, simply banning a handful of the most popular STL files would still have value.

Maybe gcode watermarked and slicer signed? I can't remember. Something silly, that is for sure.

Perhaps if it was literally as simple as downloading a model and pressing print, then in 20 minutes you had a fully working automatic rifle this would be an issue, but that technology simply doesn't exist today.

In reality if your goal is to acquire a weapon which can do lethal harm to someone you just wouldn't print a gun. Even if you wanted to kill multiple people in a place like the UK where guns are illegal you still wouldn't print a gun because you'd probably be better off just getting knife than printing a crappy gun and trying to source an effective propellant, etc.