Track data encryption
First Claim
Patent Images
1. A method comprising:
- providing to a server, by an access device, a secondary primary account number (PAN)for a primary account, wherein the secondary PAN is created by modifying a primary PAN for the primary account using the access device, wherein the secondary PAN has a location identification data element, and wherein the location identification data element is the same as a corresponding location identification data element in the primary PAN, and wherein a middle portion of the secondary PAN is different than a corresponding middle portion of the primary PAN; and
receiving from the server, at the access device, an approval or disapproval for a payment transaction from the primary account after said providing the secondary PAN to the server;
wherein the secondary PAN and the primary PAN each comprise at least three corresponding digits having a same value; and
wherein the middle portion of the secondary PAN further comprises a digit selected to allow a checksum operation to be performed using the secondary PAN that will generate a same value as a checksum digit of the primary PAN.
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Abstract
A method for using a secondary PAN is disclosed. The method includes providing a secondary PAN associated with a primary PAN, where the secondary PAN has at least one end portion that is the same as the primary PAN, but has a middle portion of that is different than the primary PAN.
345 Citations
18 Claims
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1. A method comprising:
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providing to a server, by an access device, a secondary primary account number (PAN)for a primary account, wherein the secondary PAN is created by modifying a primary PAN for the primary account using the access device, wherein the secondary PAN has a location identification data element, and wherein the location identification data element is the same as a corresponding location identification data element in the primary PAN, and wherein a middle portion of the secondary PAN is different than a corresponding middle portion of the primary PAN; and receiving from the server, at the access device, an approval or disapproval for a payment transaction from the primary account after said providing the secondary PAN to the server; wherein the secondary PAN and the primary PAN each comprise at least three corresponding digits having a same value; and wherein the middle portion of the secondary PAN further comprises a digit selected to allow a checksum operation to be performed using the secondary PAN that will generate a same value as a checksum digit of the primary PAN. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A non-transitory computer readable storage medium comprising instructions which when executed by an access device cause the access device to perform operations comprising:
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providing, from the access device to a server, a secondary Primary Account Number (PAN) created by modifying a primary PAN, wherein the secondary PAN has a location identification data element, and wherein the location identification data element is the same as a corresponding location identification data element in the primary PAN, and wherein a middle portion of the secondary PAN is different than a corresponding middle portion of the primary PAN; and receiving, at the access device, an approval or disapproval for a payment transaction from a primary account after said providing the secondary PAN to the server; wherein the middle portion of the secondary PAN comprises at least three digits having a same value and a digit selected to allow a checksum operation to be performed using the secondary PAN that will generate a same value as a checksum digit of the primary PAN; and wherein the secondary PAN comprises at least three digits that each have a same value as a corresponding digit of the primary PAN. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable storage medium comprising instructions which when executed by an access point cause the access point to authenticate a payment transaction by performing operations comprising:
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receiving at the access point, from a portable consumer device, a data track comprising a primary Primary Account Number (PAN) at a first location of the data track, wherein the primary PAN comprises a location identification data element and a middle portion; modifying, by the access point, the middle portion of the primary PAN to create a secondary PAN, wherein a middle portion of the secondary PAN comprises a digit selected to allow the checksum operation to be performed using the secondary PAN that will generate a same value as a checksum digit of the primary PAN; providing to a server, by the access point, the secondary PAN, wherein the secondary PAN includes the location identification data element; and receiving, at the access point, an approval or disapproval for a payment transaction after said providing the secondary PAN to the server; wherein the primary PAN and the secondary PAN both have 13, 16 or 19 digits. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification