This invention describes methods for securing access to an electronic annotation provided on an object, including the steps of providing the object with a plurality of memory tags, providing an electronic annotation on at least one of the memory tags, and defining a sequence in which the memory tags...http://www.google.fr/patents/US20060071754?utm_source=gb-gplus-shareBrevet US20060071754 - Securing electronic annotations
Numéro de demande: 11/237,912 Numéro de publication: US 2006/0071754 A1 Date de dépôt: 29 sept. 2005 Brevet délivré: US7623022 ( Date de délivrance 24 nov. 2009)
