1. A robot comprising: an imaging means for picking up an image and digitizing the image; a face detecting and identifying means for detecting, from an image acquired at the imaging means, a face area of a person and storing the face area, and identifying a person using a stored image and face image information that is referred for identification; an information informing means for informing a user about result of identification acquired at the face detecting and identifying means; an information inputting means disposed so that a user can input information whether result of identification informed to the user by the information informing means is correct or incorrect; an identification result reliability calculating means for determining, using information from the imaging means, whether or not a present lighting state is suitable for identification; a controlling means for controlling a robot; and a moving means for moving a robot.