Collision detection and avoidance scheme for contactless card payment systems
First Claim
1. An electronic payment system for processing a contactless payment card transaction (i.e., a contactless payment transaction), the electronic payment system comprising a card reader which is configured to process the transaction when only one and only one contactless payment card is present in the card reader'"'"'s operating field, wherein the card reader deploys collision detection algorithms to detect and report a collision instance in which multiple contactless payment cards are present in the card reader'"'"'s operating field, and wherein the system halts processing the payment in the instance a collision is detected.
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Accused Products
Abstract
An electronic payment system for conducting transactions by presenting a contactless payment card to a card reader. The card reader processes transactions when only one card is present in its operating field. The card reader uses collision detection and avoidance algorithms to detect and report instances where multiple cards are present in the operating field. In response to a reported collision, the collision may be cleared by manual intervention, i.e., by physically removing excess cards from the reader'"'"'s operating field.
51 Citations
20 Claims
- 1. An electronic payment system for processing a contactless payment card transaction (i.e., a contactless payment transaction), the electronic payment system comprising a card reader which is configured to process the transaction when only one and only one contactless payment card is present in the card reader'"'"'s operating field, wherein the card reader deploys collision detection algorithms to detect and report a collision instance in which multiple contactless payment cards are present in the card reader'"'"'s operating field, and wherein the system halts processing the payment in the instance a collision is detected.
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10. An electronic payment system for processing a contactless payment card transaction (i.e., a contactless payment transaction), the electronic payment system comprising a card reader which is configured to process the transaction when one and only one contactless payment card is present in the card reader'"'"'s operating field, wherein the card reader deploys collision detection algorithms to detect and report a collision instance in which multiple contactless payment cards are present in the card reader'"'"'s operating field, and wherein the system halts processing the payment in the instance a collision is detected;
- and wherein the card reader is configured to have only a communication signal interface corresponding to a single card type active during a communication session.
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11. A collision detection and avoidance method for processing payment by a contactless payment card at a card reader, the method comprising the steps of:
- a. investigating the presence of payment cards in an operating field of the Card reader;
b. in response to step (a), processing the payment transaction involving the contactless payment card and the card reader if and only if the contactless payment card is the only card present in the operating field of the card reader; and
c. reporting and halting processing of the payment transaction when more than one payment card is present in the operating field of the card reader. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
- a. investigating the presence of payment cards in an operating field of the Card reader;
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20. A collision detection and avoidance method for processing payment by a contactless payment card at a card reader, the method comprising the steps of:
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a. investigating the presence of payment cards in an operating field of the card reader; b. in response to step (a), processing the payment transaction involving the contactless payment card and the card reader if and only if the contactless payment card is the only card present in the operating field of the card reader; and c. halting processing of the payment transaction when more than one payment card is present in the operating field of the card reader; wherein contactless payment cards are one of several different types of contactless payment cards including ISO 14443 Type A and Type B cards, wherein the interacting contactless payment cards comprise a first type of card and a second type of cards, and wherein step (a) comprises using a polling sequence to detect the presence of both types of cards; wherein step (a) comprises identifying the type of card present, when only one card is found to be present in the operating field of the card reader; wherein step (b) comprises activating a communication session between the identified only one card and the card reader according to the type of the card to initiate processing of a transaction; wherein the card reader is coupled to terminal which is configured with transaction processing applications, wherein steps (a)-(c) are directed by a terminal process, and wherein step (b) comprises using a terminal transaction processing application to process the transaction.
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Specification