A synchronization device for synchronization between a mobile device and a display device, characterized by comprising: a storage part configured to store first area information and first direction information of each of a plurality of display devices; a receiving part configured to receive second area information and second direction information of the mobile device; and a synchronizing part configured to interconnect the mobile device with a display device having the first area information and the first direction information corresponding to the second area information and the second direction information, from among the plurality of display devices, wherein the first area information designates areas in which the plurality of display devices are positioned, and the first direction information designates directions in which the plurality of display devices are pointing, and wherein the second area information designates an area in which the mobile device is positioned, and the second direction information designates a direction in which the mobile device is pointing, wherein the synchronizing part selects a display device having the first area information corresponding to the second area information, from among the plurality of display devices, and interconnects the mobile device with the selected display device, wherein, if there are a plurality of display devices having the first area information corresponding to the second area information, the synchronizing part selects a display device having the first direction information corresponding to the second direction information, from among the display devices having the first area information corresponding to the second area information, and interconnects the mobile device with the selected display device, and wherein a corresponding between direction information means that the mobile device and the display device point in directions facing each other. a storage part configured to store first area information and first direction information of each of a plurality of display devices; a receiving part configured to receive second area information and second direction information of the mobile device; and a synchronizing part configured to interconnect the mobile device with a display device having the first area information and the first direction information corresponding to the second area information and the second direction information, from among the plurality of display devices, wherein the first area information designates areas in which the plurality of display devices are positioned, and the first direction information designates directions in which the plurality of display devices are pointing, and wherein the second area information designates an area in which the mobile device is positioned, and the second direction information designates a direction in which the mobile device is pointing, wherein the synchronizing part selects a display device having the first area information corresponding to the second area information, from among the plurality of display devices, and interconnects the mobile device with the selected display device, wherein, if there are a plurality of display devices having the first area information corresponding to the second area information, the synchronizing part selects a display device having the first direction information corresponding to the second direction information, from among the display devices having the first area information corresponding to the second area information, and interconnects the mobile device with the selected display device, and wherein a corresponding between direction information means that the mobile device and the display device point in directions facing each other.