Patent ID: 8052171
Filing Date: 2011-11-08
Classification: B42D,G06K

Abstract:
1. A security element for RF identification, wherein the security element has a flexible film body into which are integrated an electronic circuit which is designed for the storage of security-relevant items of information and an RF antenna which is operatively connected to the electronic circuit and which serves for contact-less communication of the electronic circuit with a test device, wherein permanently fixed on at least a portion of a first surface of the flexible film body is a first optically variable element which at least region-wise covers the region of the flexible film body in which the electronic circuit is arranged, wherein permanently fixed on at least a portion of a second surface of the flexible film body is a second optically variable element, the first surface opposing the second surface, wherein the omission of or change to either of the first and second optically variable elements is recognizable from one side of the flexible film body, wherein at least one of the first and second optically variable element has a metallic reflection layer and the RF antenna is arranged outside the region in which the first or the second optically variable element respectively is provided and the RF antenna and the first or second optically variable element respectively thus do not overlap, wherein a) the optical effects generated by the first optically variable element and by the second optically variable element show mutually supplementary representations, or b) the first and second optically variable elements overlap at least in region-wise manner.