The present invention provides identification documents with security features. For example, a document may include two or more inks that are designed to cohesively fail upon a de-lamination attack. A resulting failure pattern is preferably difficult to predict. The two or more inks are applied to an...http://www.google.es/patents/US20070158939?utm_source=gb-gplus-sharePatente US20070158939 - Ink With Cohesive Failure and Identification Document Including Same
Ink With Cohesive Failure and Identification Document Including Same
Número de solicitud: 11/567,061 Número de publicación: US 2007/0158939 A1 Fecha de presentación: 5 Dic 2006 Patente emitida: US7819327 ( Fecha de emisión 26 Oct 2010)
