process for the provision of a security element to a document security and safety document

摘要

the invention relates to a method of providing a security feature to a security document, comprising the step of providing a conductive layer (22), and a step of removing a portion of the conductive layer (22) so as to convert at least a portion of the the conductive layer in a mu00e9tamatu00e9riau (31, 32) selected to provide authentication of document security.the invention relates to a security document with this process, and a process for the authentication of a security document.