Device, system and method for reducing an interaction time for a contactless transaction
First Claim
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1. A reader comprising:
- a contactless interface;
a transaction module coupled to the contactless interface, wherein the transaction module is configured to minimize an interaction time under 500 milliseconds for a contactless transaction between the reader and a card by;
wirelessly sending from the reader to a card in a command message a terminal unpredictable number, transaction amount, and transaction currency;
receiving from the card in response to the command message a wireless message with a dynamic signature generated based on an application transaction counter (ATC), the terminal unpredictable number, the transaction amount, the transaction currency, and a card unpredictable number, the dynamic signature sent with an application file locator (AFL); and
thenwirelessly transmitting from the reader to the card a read record command message to request one or more records indicated in the AFL from the card; and
receiving from the card the requested one or more records requested by the read record command; and
a security module, coupled to the transaction module, configured for;
recalculating the dynamic signature; and
authorizing the contactless transaction if the dynamic signature received from card is validated.
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Abstract
A method. The method comprises, at a reader, performing at least one transaction-based risk management process prior to energizing a contactless interface, initiating communication with a card utilized for the contactless transaction, receiving information associated with the card, and terminating communication with the card to authorizing the contactless transaction.
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Citations
20 Claims
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1. A reader comprising:
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a contactless interface; a transaction module coupled to the contactless interface, wherein the transaction module is configured to minimize an interaction time under 500 milliseconds for a contactless transaction between the reader and a card by; wirelessly sending from the reader to a card in a command message a terminal unpredictable number, transaction amount, and transaction currency; receiving from the card in response to the command message a wireless message with a dynamic signature generated based on an application transaction counter (ATC), the terminal unpredictable number, the transaction amount, the transaction currency, and a card unpredictable number, the dynamic signature sent with an application file locator (AFL); and
thenwirelessly transmitting from the reader to the card a read record command message to request one or more records indicated in the AFL from the card; and receiving from the card the requested one or more records requested by the read record command; and a security module, coupled to the transaction module, configured for; recalculating the dynamic signature; and authorizing the contactless transaction if the dynamic signature received from card is validated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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a reader comprising; a contactless interface; a transaction module coupled to the contactless interface and configured to; wirelessly send from the reader to a card in a command message a terminal unpredictable number, transaction amount, and transaction currency; receive from the card in response to the command message a wireless message with a dynamic signature based on an application transaction counter (ATC), the terminal unpredictable number, the transaction amount, the transaction currency, and a card unpredictable number, the dynamic signature sent with an application file locator (AFL); and
thenwirelessly transmit from the reader to the card a read record command message to request one or more records indicated in the AFL from the card; and receive from the card the requested one or more records requested by the read record command; and a security module, coupled to the transaction module, configured for; recalculating the dynamic signature; and authorizing the contactless transaction if the dynamic signature received from the card is validated; and a card configured to; send from the card to the reader the wireless message with the dynamic signature; and
thensend from the card to the reader the requested one or more records requested by the read record command, wherein the transaction module is configured to minimize an interaction time under 500 milliseconds for a contactless transaction between the reader and the card. - View Dependent Claims (12, 13, 14, 15)
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16. A method for minimizing an interaction time under 500 milliseconds for a contactless transaction between a reader and a card, the method comprising:
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wirelessly sending from a reader to a card in a command message a terminal unpredictable number, transaction amount, and transaction currency; receiving at the reader from the card in response to the command message a wireless message with a dynamic signature generated based on an application transaction counter (ATC), the terminal unpredictable number, the transaction amount, the transaction currency, and a card unpredictable number, the dynamic signature sent with an application file locator (AFL); and
thenwirelessly transmitting from the reader to the card a read record command message to request one or more records indicated in the AFL from the card; and receiving at the reader from the card the requested one or more records requested by the read record command; and recalculating the dynamic signature based on the application transaction counter, the terminal unpredictable number, transaction amount, and transaction currency; and authorizing the contactless transaction if the dynamic signature received from card by the reader is validated. - View Dependent Claims (17, 18, 19, 20)
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Specification