Network synchronization system and information processing device

A synchronization system, comprising:

• a plurality of information processing devices, wherein,
• a first information processing device from among the plurality of information processing devices, the first information processing device including a first storage unit configured to store first user information,
• a second information processing device among the plurality of information processing devices, the second information processing device including a second storage unit configured to store second user information, and
• a cooperation control unit configured to,
• acquire the first user information stored in the first storage unit,
• compare the acquired first user information and the second user information stored in the second storage unit, and
• update the first user information stored in the first storage unit and the second user information stored in the second storage unit based on the comparison,
• in the acquiring, the cooperation control unit is configured to acquire common update information that is common to the plurality of information processing devices, and the first storage unit is configured to store the common update information,
• in the updating, the cooperation control unit is configured to update one of the first user information and the second user information based on whether one of the first user information and the second user information is a latest updated user information.

An information processing device included in a network synchronization system including a plurality of information processing devices, the information processing device comprising:

• a printing unit configured to print image data onto a recording medium;
• and
• a synchronization control unit configured to acquire update information from one of (i) a synchronization-use common storage unit of another information processing device and (ii) an update information server connected to the network synchronization system via a network, the update information being information to be applied to each of the plurality of information processing devices,
• the synchronization control unit is configured to apply the update information to the information processing device based on a comparison between first user information associated with the first information processing device and second user information associated with the second information processing device,
• in the acquiring, the synchronization control unit is configured to acquire common update information that is common to the plurality of information processing devices, and the synchronization-use common storage unit is configured to store the common update information,
• in the updating, the synchronization control unit is configured to update the second user information based on whether one of the first user information and the second user information is a latest updated user information.