An approach to managing stored-value data objects, such as electronic tickets, comprises secure systems and procedures for ticket issuing, storage, and redemption. With these systems and procedures in place, stored-value data objects may be securely transferred to remote systems, such as a user's personal...http://www.google.fr/patents/US20030093695?utm_source=gb-gplus-shareBrevet US20030093695 - Secure handling of stored-value data objects
