Abstract: A token is generated and processed as a substitute for sensitive information, e.g., payment information associated with a customer making a purchase of a product/service from a vendor. The customer's payment information is encrypted and stored in a first memory record of a secure computer system. A token is generated that includes memory-related information identifying the first memory record, and the token is transmitted to the vendor for storage in a customer record. To facilitate payment for the purchase, the vendor transmits the token to another party (e.g., a billing service or payment processor), and the encrypted payment information is read from the first memory record of the secure computer system based on the memory-related information in the token. The encrypted payment information is then decrypted to recover the payment information which is then used to effect payment.

Abstract: A system for facilitating commercial transactions, between a plurality of customers and at least one supplier of items over a computer driven network capable of providing communications between the supplier and at least one customer site associated with each customer. Each site includes an associated display and an input device through which the customer can input information into the system. At least one supplier is presented on the display for selection by the customer using the input device. Similarly items from a supplier can be displayed for the customer to observe. Associated with a supplier of such items is an item database including information on presented items. Pricing subsystem receives information from the item database to determine the cost associated with a presented item. In addition a customer information database stores information relating to the customer. Associated with each customer is a customer monitoring object for each customer.