PURPOSE: To execute input and revision efficiently of information requiring immediacy from a remote unspecified sender to a specific object.

CONSTITUTION: The display device is provided with a data reception section 14 receiving data to a specific object party sent from an unspecified sender via a public line, an apprizing section 12 informing data addressed to the specific object party received by the data reception section 14 to the specific object and entering a command of confirming the information from the specific object party, a control section 10 allowing the apprizing section 12 to inform the data addressed to the specific object party received by the data reception section 14 and commanding the transmission of confirmation notice data in response to the command of the notice confirmation inputted to the apprizing section 14, and a data transmission section 16 sending the confirmation notice data to a return destination via the public line in response to the command form the control section 10.