Patent ID: 7689596

Claim:
A data transmission device for transmitting data to a destination identified by prestored destination information, the data transmission device comprising: a processor; a memory coupled to said processor; a destination designation section configured to accept a designation of a destination identifier corresponding to a destination, from among the destination information; a transmission section configured to transmit data to the destination designated by said destination designation section; a first determining section configured to determine whether the destination information was updated after a last data transmission carried out with reference to the destination information corresponding to the destination designated by said destination designation section; a notifying section configured to determine whether the destination information was updated after the last data transmission to the destination corresponding to the destination identifier designated by said destination designation section, issue a warning indicating the destination information has been updated; an authenticating section configured to authenticate ID information; and a second determining section configured to determine whether the destination information was updated after the last data transmission to the destination, determine whether ID information associated with an issuance of the transmission instruction is the same as ID information associated with the update of the destination information, wherein, if said first determining section determines that the destination information was updated after the last data transmission to the destination and if said second determining section determines that the ID information associated with the issuance of the transmission instruction is different from the ID information associated with the update of the destination information, said notifying section issues the warning indicating the destination information has been updated, wherein said notifying section issues the warning before said transmission section transmits the data to the designated destination, if the destination identifier is designated by said destination designation section, and wherein the warning includes a message encouraging confirmation of an update of the destination information.