Patent ID: 7580885

Claim:
A settlement system, comprising: a mobile communication terminal connectable with a mobile communication network; an input device configured to receive input data of items or a service to be purchased and identification data of the mobile communication terminal and output data of a charge based on the input data of the items or the service to be purchased; and a settlement device able to communicate with the mobile communication terminal through the mobile communication network and able to communicate with the input device through the mobile communication network, and able to transfer money from a first account to a second account, wherein the input device comprises: a first transmission unit configured to transmit the data of the charge to the mobile communication terminal; and a second transmission unit configured to transmit the data of the charge, the identification data of the mobile communication terminal, and identification data of the input device to the settlement device; the settlement device comprises: a control unit configured to transfer an amount of money determined by the data of the charge from the first account determined by the identification data of the mobile communication terminal received from the input device to the second account determined by the identification data of the input device; and a transmission unit configured to transmit report data of the amount of money to the mobile communication terminal through the mobile communication network; and the mobile communication terminal comprises: a first reception unit configured to receive the data of the charge from the input device; a second reception unit configured to receive the report data of the amount of money from the settlement device; a display configured to display the data of the charge and the report data of the amount of money; a memory configured to be able to store the data of the charge from the input device at least until the report data is received by the second reception unit; and a transmission unit configured to transmit an acknowledgement signal acknowledging the received report data to the settlement device.