System and method for secured account numbers in proximity devices

• US 20070055630A1
• Filed: 04/05/2006
• Published: 03/08/2007
• Est. Priority Date: 09/06/2005
• Status: Active Grant

• Current Assignee: Visa USA, Inc. (Visa, Inc.)
• Original Assignee: Visa USA, Inc. (Visa, Inc.)
• Inventors: Faith, Patrick, Maw, Brian, Gauthier, Patrick, Patterson, Barbara
• Granted Patent: US 8,762,263 B2
• Time in Patent Office: Days
• US Class Current: 705/44
• CPC Class Codes: G06Q 20/204 comprising interface for record bearing medium or carrier for electronic funds transfer or payment credit
• CPC Class Codes: G06Q 20/24 Credit schemes, i.e. "pay after"
• CPC Class Codes: G06Q 20/327 Short range or proximity payments by means of M-devices
• CPC Class Codes: G06Q 20/352 Contactless payments by cards
• CPC Class Codes: G06Q 20/385 using an alias or single-use codes
• CPC Class Codes: G06Q 20/40 Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
• CPC Class Codes: G06Q 40/02 Banking, e.g. interest calculation or account maintenance credit or loans G06Q40/03

Abstract

A method and system for using a secured account number for processing proximity types of wireless financial transactions associated with portable consumer proximity devices is disclosed. In one embodiment, the method includes receiving a proximity type of wireless financial transaction request along with a secured account number from a portable proximity consumer device such as a contactless smart card, converting the secured account number to the user'"'"'s real account number, and transmitting the financial transaction request along with the user'"'"'s real account number to the issuer of the user'"'"'s real account number for authorization and processing.

Claims

1. A method comprising:

receiving an authorization request message, wherein the authorization request message includes a secured account number, wherein the authorization request message originated from a wireless interaction between a portable proximity consumer device including a real account number, a wireless transmission module, and a memory pre-loaded with the secured account number, and a proximity reader device comprising a second wireless transmission module, wherein the secured account number is associated with the real account number, and wherein the secured account number was wirelessly transmitted from the first wireless transmission module in the portable proximity consumer device to the second wireless transmission module in the proximity reader device; and

determining the real account number using the secured account number after receiving the authorization request message including the secured account number.

2. The method of claim 1 wherein the secured account number is only wirelessly transmitted to the proximity reader device when there is a wireless financial transaction and wherein the real account number is used for non-wireless financial transactions.

3. The method of claim 1, further comprising sending an authorization response message after the real account number is determined using the secured account number.

4. The method of claim 1, wherein the real account number is a user'"'"'s credit card account number, bank account number, or debit card account number.

5. The method of claim 1, wherein the authorization request message comprises a wireless transaction type identifier.

6. The method of claim 1, further wherein the authorization request message was previously encrypted.

7. The method of claim 1, wherein the portable proximity consumer device is in the form of a card, and wherein the card has a magnetic stripe comprising the real account number.

8. A computer readable medium comprising code for performing the method of claim 1.

9. A server computer adapted to perform the method of claim 1.

10. The method of claim 1, further comprising pre-loading the secured account number into the memory and pre-loading the real account number into a magnetic storage medium in the portable proximity consumer device.

11. A portable proximity consumer device for performing contactless transactions, the portable proximity consumer device comprising:

a wireless transmission module;

a first memory comprising a secured account number coupled to the first wireless transmission module; and

a second memory wherein the second memory comprising a real account number, wherein the real account number is associated with the secured account number.

12. The portable proximity consumer device of claim 11, wherein the first and second memories use different data storage technologies.

13. The portable proximity consumer device of claim 11, wherein the first memory comprises a memory chip and wherein the second memory comprises a magnetic stripe, and wherein the portable proximity consumer device is in the form of a card.

14. The portable proximity consumer device of claim 11, wherein the portable proximity consumer device is a financial transaction card.

15. The portable proximity consumer device of claim 11, wherein the contactless transaction comprises a contactless financial transaction.

16. A system for performing payment transactions, the system comprising:

a payment processing system capable of converting a secured account number to a user'"'"'s real account number, wherein in response to the payment processing system receiving a transaction authorization request comprising the secured account number, the payment processing system determines the user'"'"'s real account number associated with the secured account number, and verifies that the transaction authorization request was associated with a proximity type of wireless transaction.

17. The system of claim 16, wherein the wireless transaction comprises a proximity type of financial transaction.

18. The system of claim 16, wherein the wireless transaction is wirelessly received from a portable proximity consumer device comprising the secured account number and the user'"'"'s real account number.

19. The system of claim 16, wherein the payment processing system comprises code to convert the secured account number to the user'"'"'s real account number.

20. The system of claim 16, wherein the transaction authorization request comprises a transaction indicator indicative of whether the transaction authorization request was received via the proximity type of wireless transaction.

21. The system of claim 16, wherein the payment processing system comprises code to issue an alert if the secured account number was not received through a proximity type of wireless transaction with a portable proximity consumer device comprising the secured account number.

22. A method of conducting wireless financial transactions, the method comprising:

receiving an authorization request message that includes a secured account number and a transaction identifier, wherein the authorization request message originated from a portable consumer device comprising the secured account number and a real account number; and

determining the real account number using the secured account number when the transaction identifier is indicative that the secured account number originated from a wireless transaction with the portable consumer device.

23. The method of claim 22, wherein the real account number is usable for non-wireless financial transactions.

24. The method of claim 22, further comprising generating an alert when the transaction identifier is indicative that the secured account number originated from a non-wireless transaction.

25. The method of claim 22, further comprising:

generating an alphanumeric output that includes a predetermined sequence of alphanumeric characters designated to be common to both the secured account number and the real account number; and

masking or eliminating other alphanumeric characters of the alphanumeric output not designated the predetermined sequence.

26. The method of claim 22, wherein receiving an authorization request message comprises;

transmitting the authorization request message to an acquirer;

transmitting the authorization request message from the acquirer to a payment processing system;

verifying with the payment processing system that the secured account number is associated with a wireless transaction;

when verified that the secured account number is associated with the wireless transaction, sending the authorization request message along with the real account number to an issuer for authorization; and

when the financial transaction is authorized, transmitting an authorization message from the issuer to the payment processing system, acquirer, and merchant.

27. The method of claim 22, wherein determining the real account number comprises querying a database of secured account numbers, wherein each of the secured account numbers is associated with a respective real account number.

28. The method of claim 22, wherein determining the real account number comprises processing the secured account number with an algorithm configured to convert the secured account number to the real account number.