The present invention provides a method of making a structure for making a security document and/or a document of value, or for making an article secure, the structure comprising at least one electronic device and at least one at least partially fibrous layer having a window arranged to receive the electronic...http://www.google.de/patents/US20090294534?utm_source=gb-gplus-sharePatent US20090294534 - Structure including an electronic device for making a security document
