| 摘要 |
A buyer (A) directly transmits to his bank (B1) a message (3) containing instruction for payment of an amount (MT) for service to be delivered by a seller (V). The bank (B1) authenticates the buyer and the transaction, settles or does not settle the payment of said amount (MT), depending respectively on the positive of negative results of said authenticating operations, and sends in reply to the buyer a message (4) containing data on the acceptance or denial of said instruction. The buyer verifies the reply from his bank and sends a message (5), containing said reply to the seller, who authenticates the transaction, verifies the content of the message (5), and depending respectively on the positive or negative result of said authentication and said verification, delivers or does not deliver the service, transmitting said result to the buyer by sending a message (6).
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