Mastercard Asia/pacific Pte. Ltd.

Mastercard International Incorporated

Manohar Murali

Sandeep Malhotra

Tadepally Venkata Seshadri

Rajen Srinivasa Prabhu

Chayan Hazra

A method is provided. The method includes receiving a request message, the request message relating to a transaction between a first client and a second client, the request message including first client data and second client data, the first client data identifying an account to be used by the first client in the transaction, the second client data indicating if the second client is subscribed to a service. The method further includes determining if the second client is subscribed to the service, and generating an authentication request message if the second client is not subscribed to the service, the authentication request message requesting confirmation that a holder of the account is the first client. The method further includes sending the authentication request message, and receiving an authentication response message from the external server in response, the authentication response message including an indication whether the holder is the first client.

Method and corresponding proxy server, system, computer-readable storage medium and computer program

According to one aspect of the disclosure, there is provided a method for conducting a transaction between a service provider and a merchant, the method comprising: issuing an account number against which a transaction with the merchant is made, wherein the account number belongs to a subscriber registered with the service provider; assigning a unique reference used to map the subscriber to the account number; and transmitting, upon receiving use of the account number for the transaction, the unique reference and details of the transaction to the service provider, wherein the unique reference is processed against a database of unique references to identify the subscriber to which the account number belongs, for the service provider to associate the transaction to the identified subscriber, based on the details of the transaction. A service provider server, a server network and a system that implements this method is also disclosed.

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Singapore, Singapore

Manohar Murali