A TV crime show I saw recently centered on the ability of forensic scientists to identify a plastic bag as coming from a particular roll: it’s all down to the striations, apparently. This development isn’t fiction, though: researchers at the University of Buffalo have figured out how to identify the individual 3D printer that produced a particular print. The development, called PrinTracker, uses unique differences in the way a printer lays down print material to identify a printer with a claimed 94 percent accuracy.
