METHOD OF PROVIDING A SECURITY DOCUMENT WITH A SECURITY FEATURE, AND SECURITY DOCUMENT
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United States of America Patent
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Issued Date -
Apr 21, 2016
app pub date -
Jun 24, 2014
filing date -
Jun 26, 2013
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Abstract
A method of providing a security document with a security feature includes the steps of providing a conductive layer, and removing part of the conductive layer to convert at least a portion of the conductive layer into a metamaterial. The metamaterial is selected to provide for authentication of the security document. It is possible to obtain a security document with this method and to subsequently authenticate the security document.
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