A service disclosure device receives a search message transmitted from a service using device, and if the ID of the service using device is stored in a memory, transmits a response message indicating a service to be disclosed to the service using device. The service disclosure device displays information about the service using device on a display, and if a permission to disclose the service to the service using device is input, registers the ID of the service using device in the memory. After a response limit to the search message has expired, the service disclosure device transmits a notification message indicating the service to be disclosed to the service using device.