Naturally safe: Cellular noise for document security

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dc.citation.issue12
dc.citation.rankM21
dc.citation.spagee201900218
dc.citation.volume12
dc.contributor.authorPavlović, Danica
dc.contributor.authorRabasović, Mihailo
dc.contributor.authorKrmpot, Aleksandar
dc.contributor.authorLazović, Vladimir
dc.contributor.authorČurčić, Srećko
dc.contributor.authorStojanović, Dejan
dc.contributor.authorJelenković, Branislav
dc.contributor.authorZhang, Wang
dc.contributor.authorZhang, Di
dc.contributor.authorVukmirović, Nenad
dc.contributor.authorStepanenko, Dimitrije
dc.contributor.authorKolarić, Branko
dc.contributor.authorPantelić, Dejan
dc.date.accessioned2024-06-24T11:15:01Z
dc.date.available2024-06-24T11:15:01Z
dc.date.issued2019-12
dc.description.abstractModern document protection relies on the simultaneous combination of many optical features with micron and submicron structures, whose complexity is the main obstacle for unauthorized copying. In that sense, documents are best protected by the diffractive optical elements generated lithographically and mass‐produced by embossing. The problem is that the resulting security elements are identical, facilitating mass‐production of both original and counterfeited documents. Here, we prove that each butterfly wing‐scale is structurally and optically unique and can be used as an inimitable optical memory tag and applied for document security. Wing‐scales, exhibiting angular variability of their color, were laser‐cut and bleached to imprint cryptographic information of an authorized issuer. The resulting optical memory tag is extremely durable, as verified by several century‐old insect specimens still retaining their coloration. The described technique is simple, amenable to mass‐production, low cost and easy to integrate within the existing security infrastructure.
dc.identifier.doi10.1002/jbio.201900218
dc.identifier.issn1864-063X
dc.identifier.issn1864-0648
dc.identifier.scopus2-s2.0-85074522568
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/129
dc.identifier.wos000488278400001
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.relation.ispartofJournal of Biophotonics
dc.relation.ispartofabbrJ. Biophotonics
dc.rightsrestrictedAccess
dc.titleNaturally safe: Cellular noise for document security
dc.typeArticle
dc.type.versionpublishedVersion
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