METHOD AND DEVICE FOR GENERATING A SINGLE-USE FINANCIAL ACCOUNT NUMBER
First Claim
1. A method for implementing a limited use credit card system, the method comprising:
- allocating in a computer system a limited use credit card number constituting a different number than a customer account number of a user and functioning as an authorized substitute for the customer account number;
associating in the computer system the limited use credit card number with the customer account number and a set of conditions defined by the user, wherein the customer account number is not limited to said user defined set of conditions;
issuing the limited use credit card number;
detecting in the computer system a transaction using the limited use credit card number;
processing in the computer system the transaction in accordance with the set of conditions associated with limited use credit card number;
processing in the computer system the transaction against the customer account number; and
authorizing or not authorizing the transaction based on a result of said processing of both the limited use credit card number and the customer account number in the computer system.
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Accused Products
Abstract
A device for facilitating financial account transactions is described which includes a processing unit including a cryptographic processor. The device also includes an input unit, a display unit and a memory device connected to the processing unit. The memory device contains a private cryptographic key, a first data element and a second data element. The processing unit encrypts the first data element using the private cryptographic key and the second data element, modifies the second data element, combines the encrypted first data element and the second data element to generate a single-use financial account identifier, and displays the single-use financial account identifier. This identifier is then transmitted to a central processor for authorization of the transaction. The central processor extracts and decrypts data elements from the transmitted identifier using the private cryptographic key, compares those data elements with data elements stored in a memory, and verifies the single-use financial account identifier in accordance with the comparison.
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Citations
48 Claims
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1. A method for implementing a limited use credit card system, the method comprising:
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allocating in a computer system a limited use credit card number constituting a different number than a customer account number of a user and functioning as an authorized substitute for the customer account number; associating in the computer system the limited use credit card number with the customer account number and a set of conditions defined by the user, wherein the customer account number is not limited to said user defined set of conditions; issuing the limited use credit card number; detecting in the computer system a transaction using the limited use credit card number; processing in the computer system the transaction in accordance with the set of conditions associated with limited use credit card number; processing in the computer system the transaction against the customer account number; and authorizing or not authorizing the transaction based on a result of said processing of both the limited use credit card number and the customer account number in the computer system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for implementing a single-use credit card system, the method comprising:
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allocating in a computer system a single-use credit card number constituting a different number than a customer account number of a user and functioning as an authorized substitute for the customer account number; associating in the computer system the single-use credit card number with the customer account number and a set of conditions defined by the user, wherein the customer account number is not limited to said user defined set of conditions; issuing the single-use credit card number; detecting in the computer system a transaction using the single-use credit card number; processing in the computer system the transaction in accordance with the set of conditions associated with single-use credit card number; processing in the computer system the transaction against the customer account number; and authorizing or not authorizing the transaction based on a result of said processing of both the single-use credit card number and the customer account number in the computer system. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification