# US 10,872,323 B2 · System and method for stand-in processing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,872,323 B2 - Document ID: US10872323B2 - Status: Granted - Kind: B2 - Application number: 15/811,894 - Filed: 2017-11-14 - Published: 2018-05-24 - Granted: 2020-12-22 - Earliest claimed: 2016-11-21 - Assignees: Mastercard International Incorporated - Applicants: Mastercard International Incorporated - Inventors: Piyush Sharma; Ravinder Wadhwa - Web page: https://patentgrep.com/patent/US10872323B2 ## CPC - G06Q 20/20: Point-of-sale [POS] network systems - G06Q 20/4012: {Verifying personal identification numbers [PIN]} - G06Q 20/4018: {using the card verification value [CVV] associated with the card} - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR ## Abstract A system and method for stand-in processing are provided. The system includes a processor and a memory unit communicatively coupled to the processor. The memory unit is configured to store transaction data received from an acquirer corresponding to a transaction made by a payment card. The processor is configured to determine data representing a point of sale (POS) entry mode of the transaction from the transaction data and, using one or more stand-in rules provided by an issuer of the payment card, process the transaction on behalf of the issuer based on the data representing the POS entry mode. Processing includes approving or declining the transaction. ## Claims ### Claim 1 A system for stand-in processing, comprising: a processor in communication with a plurality of acquirer computing devices and an issuer computing device via a payment card network, the issuer computing device associated with an issuer of a payment card; and a memory unit communicatively coupled to the processor, wherein the memory unit is configured to store transaction data received from the acquirer computing devices via the payment card network, the transaction data corresponding to a plurality of transactions made by the payment card, the transaction data for each of the transactions including a data element corresponding to a point of sale (POS) entry mode; and wherein the processor is configured to: determine that a value of the data element indicates the POS entry mode for at least one of the transactions as ATM-based; in response to the indication that the POS entry mode for the at least one transaction is ATM-based, apply at least one stand-in rule provided by the issuer of the payment card to process the at least one transaction on behalf of the issuer, wherein processing comprises one of approving and declining the at least one transaction in a response to the corresponding acquirer computing device, the one of approving and declining determined without communicating the transaction data over the payment card network to the issuer computing device; and in response to the POS entry mode for a second portion of the transactions being other than ATM-based, for each transaction of the second portion of transactions: communicate, via the payment card network, the transaction data to the issuer computing device; receive, via the payment card network from the issuer computing device, an authorization response message that one of approves or declines the corresponding transaction; and forward the authorization response message to the corresponding acquirer computing device via the payment card network. ### Claim 2 (depends on 1) The system according to claim 1, wherein the processor is configured to select the transaction for processing based on the POS entry mode prior to processing the transaction. ### Claim 3 (depends on 1) The system according to claim 1, wherein the processor is configured to process the transaction on behalf of the issuer through a zone control master key (ZCMK) shared by the issuer. ### Claim 4 (depends on 3) The system according to claim 3, wherein the zone control master key comprises a PIN verification key (PVK). ### Claim 5 (depends on 3) The system according to claim 3, wherein the zone control master key comprises a card verification key (CVK). ### Claim 6 (depends on 1) The system according to claim 1, wherein the data element comprises data element 22 of a message compliant with ISO 8583. ### Claim 7 A method for stand-in processing, the method comprising the following steps executed by a processor, the processor in communication with a plurality of acquirer computing devices and an issuer computing device via a payment card network, the issuer computing device associated with an issuer of a payment card: receiving, from the plurality of acquirer computing devices via the payment card network, transaction data corresponding to a plurality of transactions made by the payment card, the transaction data for each of the transactions including a data element corresponding to a point of sale (POS) entry mode; determining that a value of the data element indicates the POS entry mode for at least one of the transactions as ATM-based; in response to the indication that the POS entry mode for the at least one transaction is ATM-based, applying at least one stand-in rule provided by the issuer of the payment card to process the transaction on behalf of the issuer, wherein processing comprises one of approving and declining the at least one transaction in a response to the corresponding acquirer computing device, the one of approving and declining determined without communicating the transaction data over the payment card network to the issuer computing device; and in response to the POS entry mode for a second portion of the transactions being other than ATM-based, for each transaction of the second portion of transactions: communicating, via the payment card network, the transaction data to the issuer computing device; receiving, via the payment card network from the issuer computing device, an authorization response message that one of approves or declines the corresponding transaction; and forwarding the authorization response message to the corresponding acquirer computing device via the payment card network. ### Claim 8 (depends on 7) The method according to claim 7, further comprising selecting the transaction for processing based on the POS entry mode prior to the processing step. ### Claim 9 (depends on 7) The method, according to claim 7 wherein processing the transaction on behalf of the issuer comprises using a zone control master key (ZCMK) shared by the issuer. ### Claim 10 (depends on 9) The method according to claim 9, wherein the zone control master key comprises a PIN verification key (PVK). ### Claim 11 (depends on 9) The method according to claim 9, wherein the zone control master key comprises a card verification key (CVK). ### Claim 12 (depends on 7) The method according to claim 7, wherein the data element comprises data element 22 of a message compliant with ISO 8583.