Counterfeit protection often leans on the idea that physical materials have quirks no attacker can copy. A new study challenges that comfort by showing how systems built on paper surface fingerprints can be disrupted or bypassed. The research comes from teams at the University of Maryland and North Carolina State University, and examines paper based physically unclonable functions, or paper PUFs, which rely on microscopic surface variations in paper to authenticate products. Paper PUFs have … More
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