Patent ID: 10402347

Abstract:
A data processing device has a communicator that receives, from a data overwriter, first device-specific information that identifies one of the plural same-ID data processing devices as a data overwrite object device having data to be overwritten by the data overwriter. Then, a device-specific information generator in the data processing device generates second device-specific information that is used to determine whether a subject data processing device is the data overwrite object device. Then, a specifier in the subject data processing device specifies that (i) the subject data processing device is the data overwrite object device or (ii) one of other plural same-ID data processing devices other than the subject data processing device is the data overwrite object device, based on a matching between (a) the first device-specific information received from the data overwriter, and (b) the second device-specific information generated by the device-specific information generator.