An electronic transaction payment system is provided having a vendor terminal associated with a vendor who provides goods or services to a purchaser, a vendor smart-card and a vendor smart-card reader for transmitting data to and receiving data from the vendor smart-card. The system also includes a purchaser...http://www.google.fr/patents/US20050033692?utm_source=gb-gplus-shareBrevet US20050033692 - Payment system
Numéro de demande: 10/474,050 Numéro de publication: US 2005/0033692 A1 Date de dépôt: 8 avr. 2002 Brevet délivré: US7680736 ( Date de délivrance 16 mars 2010)
