A face authentication machine includes a face image acquirer (camera) that acquires a live image of a predetermined capturing area in a facility including a face image of a user; a display unit (display) that displays a progress of face authentication of the face image included in the live image acquired by the face image acquirer; and a processor (controller) that controls the face image acquirer and the display unit, in which the processor sequentially displays two or more notification screens indicating the progress on the display unit, when the user is detected from the live image.