| 摘要 |
<p>An electronic system (1) is described to perform a purchase transaction of goods or services. The system includes a mobile electronic device (2) configured to receive (t3) a second message (MSG2) carrying an authorization data field (AUT_D) indicating a valid or invalid authorization to use an electronic money for performing the purchase transaction, configured to store the content of the authorization data field into a non-volatile memory (160) inside the mobile electronic device and configured to transmit (t5; t7') a third message (MSG3; MSG4') carrying an electronic money identification data field (EM_ID) for indicating data identifying the electronic money used for performing the purchase transaction and carrying the authorization data field (AUT_D; AUT_D'). The system further includes a transaction server (4) configured to transmit (t2) the second message (MSG2) carrying the authorization data field (AUT_D) and configured to receive (t10) a fifth message (MSG5) carrying the electronic money identification data field (EM_ID) and carrying a bill amount field (BL_AM) indicating a bill amount to be paid for the selected goods or services and transmit (t11) therefrom a sixth message (MSG6) carrying a settlement result field (RES_STL) for indicating if the value of the bill amount has been debited on the electronic money. The system further includes a Point-of-Sale device (6) configured to receive (t6; t8') from the mobile electronic device the third message (MSG3; MSG4') carrying the electronic money identification data field (EM_ID) and the authorization data field (AUT_D; AUT_D') and transmit (t9) therefrom the fifth message (MSG5) carrying the electronic money identification data field and the bill amount field (BL_AM), in case of a valid value of the content of the authorization data field.</p> |
