The bill would require consumer 3D printers sold in California to include "firearm blocking technology" that checks design files before a print job can begin.
This first bill allows the state of California to regulate and oversee all 3D prints in the name of public safety.
2D printers already have government mandated shit in them to prevent printing and scanning dollar bills.
And yellow dots have been around since (at least) the 80s.
https://en.wikipedia.org/wiki/Printer_tracking_dots