A communication device includes a wireless communication unit, a memory and a processor. The wireless communication unit is configured to perform wireless communication with an information display device. The processor is configured to perform operations including receiving first work data including first setting data from the information display device having the first work data by the wireless communication unit; and registering the first work data as storage data in a case where the memory stores second work data including second setting data and in a case where the first setting data and the second setting data are different from each other.