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Alphane_Moon@lemmy.world

Researchers embed digital 'fingerprints' into 3D printed parts — tech may make future ghost guns more traceable (www.tomshardware.com)

submitted 12 hours ago by Alphane_Moon@lemmy.world to c/hardware@lemmy.world

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[–] zipsglacier@lemmy.world 3 points 5 hours ago (1 children)

Here's the paper where they explain it. Basically, they make subtle fluctuations in layer height, adding or subtracting small amounts that are not visible to the naked eye, to encode 0s and 1s. So, maybe in principle this could run at the firmware level on your printer. Then, someone can use a microscope to read off the code from pieces of the printed part.

I would have some doubts about how reliable this is, given the relatively large tolerances I fdm printing, but they have a section about that in the paper, so I guess they at least have thought about it.

[–] Bronzebeard@lemmy.zip 5 points 2 hours ago (1 children)

So if anyone anneals their part, this fingerprint goes away.

[–] captainlezbian@lemmy.world 4 points 2 hours ago

Also these are still made of petrochemicals and thus easily incinerated during disposal