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An unclonable, fingerprint‐mimicking anti‐counterfeiting strategy is presented that encrypts polymeric particles with randomly generated silica film wrinkles. The generated wrinkle codes are as highly unique as human fingerprints and are technically irreproducible. Superior to previous physical unclonable functions, codes are tunable on demand and generable on various geometries. Reliable authentication...
W. Park, S. Kwon, and co‐workers discuss biomimetic microfingerprints for anti‐counterfeiting strategies on page 2083. In the described strategy, polymeric particles are encrypted with randomly generated silica film wrinkles, which act as codes that are as unique as human fingerprints. These codes are tunable on various geometries.
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