An information input display device, having an input section for inputting information and a display section for displaying the information, which enables an access to protected information after being authenticated by an authentication processing executed after starting up of the information input display device, the information input display device including: an authentication processor which executes the authentication processing based on authentication information inputted by the input section; and an input display controller which, after the starting up of the information input display device and before being authenticated by the authentication processing, accepts inputting of prescribed information different from the authentication information through a screen displayed on the display section, and allows the display section to display the prescribed information on the screen.