Method and system for conducting a transaction using a proximity device
First Claim
Patent Images
1. A method of conducting a transaction using a proximity device, comprising:
- dynamically generating a first authentication value;
transmitting the first authentication value from the proximity device to a terminal;
including the fist authentication value in a discretionary data field of message data, the message data being arranged in an ISO format; and
transmitting the message data from said terminal for verification.
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Abstract
A proximity device transmits a first dynamic authentication value contactlessly to a terminal. The first authentication value is included in a discretionary data field of message data arranged in an ISO Track 1 and/or ISO Track 2 formal Message data is sent from the terminal to an issuer. The issuer separately derives a second authentication value and compares it with the first authentication value.
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Citations
75 Claims
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1. A method of conducting a transaction using a proximity device, comprising:
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dynamically generating a first authentication value;
transmitting the first authentication value from the proximity device to a terminal;
including the fist authentication value in a discretionary data field of message data, the message data being arranged in an ISO format; and
transmitting the message data from said terminal for verification. - 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, 25)
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26. A system for conducting a transaction using a proximity device, comprising a processing arrangement configured to perform the steps of:
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dynamically generating a first authentication value;
transmitting the first authentication value from the proximity device to a terminal;
including the first authentication value in a discretionary data field of message data, the message data being arranged in an ISO format; and
transmitting the message data from said terminal for verification. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A computer-readable medium for conducting a transaction using a proximity device, the computer-readable medium having a set of instructions operable to direct a processor to perform the steps of:
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dynamically generating a first authentication value;
transmitting the first authentication value from the proximity device to a terminal;
including the first authentication value in a discretionary data field of message data, the message data being arranged in an ISO format; and
transmitting the message data from said terminal for verification. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
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Specification