Payment channel returning limited use proxy dynamic value

Abstract

A central platform provides proxy dynamic values for any one of a number of a cardholder's portable payment devices, upon a request for such information made during a transaction. The proxy dynamic value can be provided to the merchant, who then can route it into the acceptance network in order to initiate the authentication process. The central platform provides the actual primary account number associated with the proxy dynamic value during the authentication process.

1 .- 20 . (canceled) 
     
     
         21 . A method for facilitating a payment transaction between a user and a merchant comprising:
 in response to initiation of the payment transaction by the user, providing, a request to obtain a proxy dynamic value from a merchant computer associated with the merchant to a computer system, the computer system being distinct from an issuing bank and distinct from an acquiring bank, wherein the computer system presents to a user using a user communication device, a list of portable payment devices the user has enrolled with the computer system and receives a selection of a portable payment device from the list of portable payment devices from the user communication device, and the computer system generates and associates a proxy dynamic value which is distinct from and corresponds to a primary account number (PAN) of the portable payment device; and   receiving, by the merchant computer, from the computer system, the proxy dynamic value; and   providing, by the merchant computer, the proxy dynamic value to the computer system after the merchant computer receives the proxy dynamic value, wherein the computer system obtains the primary account number, which is used to complete the payment transaction.   
     
     
         22 . The method of  claim 21 , further comprising:
 receiving, by the merchant computer, a shipping address of the user from the computer system.   
     
     
         23 . The method of  claim 21 , wherein the proxy dynamic value is in a similar format as the primary account number. 
     
     
         24 . The method of  claim 21 , wherein the portable payment devices include one or more of credit cards, debit cards, or pre-paid cards. 
     
     
         25 . The method of  claim 21 , wherein the generated proxy dynamic value is valid during a single payment transaction. 
     
     
         26 . The method of  claim 21 , wherein the payment transaction is conducted during an online purchase with the merchant using a web browser. 
     
     
         27 . The method of  claim 21 , further comprising:
 providing, by the merchant computer to the computer system, a transaction report for the payment transaction.   
     
     
         28 . The method of  claim 21 , wherein providing the proxy dynamic value to the computer system comprises providing the proxy dynamic value to the computer system via an acquirer computer of an acquirer of the merchant. 
     
     
         29 . The method of  claim 21 , wherein the proxy dynamic value is newly generated by the computer system in response to receiving the request for the proxy dynamic value from the merchant computer. 
     
     
         30 . The method of  claim 21  wherein the user communication device is a mobile phone. 
     
     
         31 . A merchant computer associated with a merchant, the merchant computer comprising;
 a processor; and   a computer readable medium coupled to the processor, the computer readable medium comprising code, executable by the processor to implement a method comprising   in response to initiation of the payment transaction by the user, providing, a request to obtain a proxy dynamic value from the merchant computer to a computer system, the computer system being distinct from an issuing bank and distinct from an acquiring bank, wherein the computer system presents to a user using a user communication device, a list of portable payment devices the user has enrolled with the computer system and receives a selection of a portable payment device from the list of portable payment devices from the user communication device, and the computer system generates and associates a proxy dynamic value which is distinct from and corresponds to a primary account number (PAN) of the portable payment device; and   receiving, by the merchant computer, from the computer system, the proxy dynamic value; and   providing, by the merchant computer, the proxy dynamic value to the computer system after the merchant computer receives the proxy dynamic value, wherein the computer system obtains the primary account number, which is used to complete the payment transaction.   
     
     
         32 . The merchant computer of  claim 31 , wherein the method further comprises:
 receiving, by the merchant computer, a shipping address of the user from the computer system.   
     
     
         33 . The merchant computer of  claim 31 , wherein the proxy dynamic value is in a similar format as the primary account number. 
     
     
         34 . The merchant computer of  claim 31 , wherein the portable payment devices include one or more of credit cards, debit cards, or pre-paid cards. 
     
     
         35 . The merchant computer of  claim 31 , wherein the generated proxy dynamic value is valid during a single payment transaction. 
     
     
         36 . The merchant computer of  claim 31 , wherein the payment transaction is conducted during an online purchase with the merchant using a web browser. 
     
     
         37 . The merchant computer of  claim 31 , further comprising:
 providing, by the merchant computer to the computer system, a transaction report for the payment transaction.   
     
     
         38 . The merchant computer of  claim 31 , wherein providing the proxy dynamic value to the computer system comprises providing the proxy dynamic value to the computer system via an acquirer computer of an acquirer of the merchant. 
     
     
         39 . The merchant computer of  claim 31 , wherein:
 the user provides a user identifier distinct from the PAN and distinct from the proxy dynamic value to the merchant computer during initiation of the payment transaction; and   the merchant computer provides the user identifier to the computer system as part of the request for the proxy dynamic value.   
     
     
         40 . The merchant computer of  claim 27 , wherein the payment transaction is initiated from a mobile phone having an associated mobile phone number.