Nanotechnology, Deep Learning, Artificial Intelligence, Counterfeiting.
over their lifetime and they provide brand protection (26). Not only can this technique be used for colour-shifting tags but it can also be used for PUFs based on a thin film of Silver (Ag), Zinc Oxide (ZnO) and Polyvinyl Pyrrolidone (PVP) (29). Specifically, the PUFs can harness the low adhesion