A control method of a control device, the control method comprising: determining whether a movable object is located in a first area using a detection sensor; activating a first communication mode or a second communication mode among operation modes of the control device based on a result of the determining whether the movable object is located in the first area; acquiring user confirmation information from the terminal when the first mode is activated, wherein the user confirmation information corresponds to user-specific information stored in the terminal; transmitting processing request information based on the user confirmation information to a server; acquiring a processing result for the user confirmation information from the server; and providing the processing result for the user confirmation information to the terminal, wherein the first mode is activated when it is determined that the movable object is located in the first area, and the second mode is activated when it is not determined that the movable object is located in the first area, wherein when the first mode is activated, a communication area of the control device is set such that the communication area includes the first area and second area, the second area indicating a predetermined communication area other than the first area, and wherein when the second mode is activated, the communication area of the control device is set such that the communication area includes the second area and does not include the first area; wherein either the user confirmation information comprises a result for user authentication based on the user-specific information, and the processing request information comprises a processing request for a result of the user authentication; or the user confirmation information comprises information for confirming that the terminal is in the first area, the processing request information comprises a user authentication request that requests a server to perform user authentication based on the user confirmation information, and the processing result for the user confirmation information comprises a result of the user authentication. determining whether a movable object is located in a first area using a detection sensor; activating a first communication mode or a second communication mode among operation modes of the control device based on a result of the determining whether the movable object is located in the first area; acquiring user confirmation information from the terminal when the first mode is activated, wherein the user confirmation information corresponds to user-specific information stored in the terminal; transmitting processing request information based on the user confirmation information to a server; acquiring a processing result for the user confirmation information from the server; and providing the processing result for the user confirmation information to the terminal, wherein the first mode is activated when it is determined that the movable object is located in the first area, and the second mode is activated when it is not determined that the movable object is located in the first area, wherein when the first mode is activated, a communication area of the control device is set such that the communication area includes the first area and second area, the second area indicating a predetermined communication area other than the first area, and wherein when the second mode is activated, the communication area of the control device is set such that the communication area includes the second area and does not include the first area; wherein either the user confirmation information comprises a result for user authentication based on the user-specific information, and the processing request information comprises a processing request for a result of the user authentication; or the user confirmation information comprises information for confirming that the terminal is in the first area, the processing request information comprises a user authentication request that requests a server to perform user authentication based on the user confirmation information, and the processing result for the user confirmation information comprises a result of the user authentication.