Yes, there are schemes that deliberately exploit difficult-to-reproduce manufacturing defects, for things like fingerprinting / making hard-to-clone things. Th

Yes, there are schemes that deliberately exploit difficult-to-reproduce manufacturing defects, for things like fingerprinting / making hard-to-clone things. The general field is called PUF (physically uncloneable functions) https://en.m.wikipedia.org/wiki/Physical_unclonable_function https://en.m.wikipedia.org/wiki/Physical_unclonable_function