Laser written optical Physical Unclonable Functions: a route to commercialization.

This paper presents a fabrication approach towards commercialization of optical Physical Unclonable Functions (PUFs) for anti-counterfeiting. We address the limitations of existing complex and expensive implementations by demonstrating strong, intrinsic optical PUFs using Computer-Generated Holograms (CGHs) fabricated with industrial-friendly lasers. This novel method offers exceptional security with very low probability of cloning through a low-cost, production-line friendly set-up and a robust signature encoding scheme that utilizes nonlinear dimensionality reduction techniques, to differentiate legitimate variations from counterfeiting attempts. This research paves the way for widespread adoption of PUF technology for real-world applications.