Patent ID: 8132736

Claim:
A document of value, which on one of its surfaces has a security element, wherein the security element has a magnetic layer for storing machine-readable information and no more than one reflective, non-magnetizable metal layer, the single metal layer being arranged above the magnetic layer in relation to the surface of the document of value, the metal layer and the magnetic layer overlapping, at least in some regions, and the region of the metal layer that overlaps the magnetic layer being subdivided into at least two regions isolated electrically from one another, wherein the region of the metal layer that overlaps the magnetic layer has a large number of island-like metallic regions, which are in each case separated from one another by metal-free regions, and wherein the island-like metallic regions of the metal layer each have an area of less than 100 mm 2 , and wherein the ratio of the total area of the island-like metallic regions to the area of the metal-free regions separating these regions in each case is greater than 6.