Patent ID: 7441697

Claim:
A host computer system for facilitating transactions comprising: a user interface system configured to allow a first party to interact with the host computer system; and, a number generating mechanism, including an application server and a database, configured for receiving input from the user interface system, receiving a limited use Personal Identification Number (PIN) for the first party for use with a second party, wherein the limited use PIN is generated by at least one of: an RFID device and a smartcard, associating a designated primary account with the limited use PIN, associating the limited use PIN with a notification response, wherein the notification response is associated with a notification response rule relating to who to notify if the limited use PIN is used, associating the limited use PIN with an emergency response, wherein the emergency response is associated with an emergency response rule relating to an emergency entity to notify if the limited use PIN is used, and issuing the limited use PIN to the first party to facilitate a transaction with a second party, wherein the limited use PIN is configured to be immediately usable for facilitating the transaction with the second party; a number processing mechanism, including an application server and a database, configured to: receive transaction information from the second party for authorization, wherein the transaction information includes the limited use PIN; forward the transaction information to a card authorization system for authorization processing; process the transaction information with the card authorization system, wherein the card authorization system determines whether the transaction information includes the limited use PIN and interfaces with a limited use PIN system to determine whether authorization is appropriate, wherein authorization determination includes: receiving account information associated with the account number; and determining whether conditions-of-use parameters associated with the limited use PIN are satisfied, the conditions-of-use parameters defining at least a predetermined restriction on use of the limited use PIN; acquiring, from a database, the notification response rule corresponding to the limited use PIN; issuing said the notification response in accordance with said notification response rule; acquiring, from the database, the emergency response rule corresponding to the limited use PIN; issuing the emergency response in accordance with the emergency response rule; and return an appropriate approval code to the second party, if conditions of use parameters associated with the limited use PIN and the primary account are satisfied; and decline the authorization request if either the conditions associated with at least one of the primary account and the limited use PIN are not satisfied.