A system and method for shopping at a variety of different vendors easily and securely is disclosed. A user computer, a checkout processor, and one or more merchant computers are interconnected via a network. A user first selects a merchant and receives product information from the merchant. The user...http://www.google.es/patents/US5966697?utm_source=gb-gplus-sharePatente US5966697 - System and method for secure transaction order management processing
System and method for secure transaction order management processing
