METHOD OF PROVIDING A SECURITY DOCUMENT WITH A SECURITY FEATURE, AND SECURITY DOCUMENT

METHOD OF PROVIDING A SECURITY DOCUMENT WITH A SECURITY FEATURE, AND SECURITY DOCUMENT

Method of providing a security document with a security feature, comprising the step of providing a conductive layer (22), and the step of removing part of said conductive layer (22) so as to convert at least a portion of said conductive layer into a metamaterial (31, 32) selected to provide for aut...

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Bibliographische Detailangaben
Hauptverfasser: BORRUEL NAVARRO, LUIS, GARCIA JUEZ, VICENTE, GAMO ARANDA, JAVIER
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:Method of providing a security document with a security feature, comprising the step of providing a conductive layer (22), and the step of removing part of said conductive layer (22) so as to convert at least a portion of said conductive layer into a metamaterial (31, 32) selected to provide for authentication of the security document. The invention also relates to a security document obtained with this method, and to a method of authenticating such a security document.