The present invention relates to a slide-type fingerprint reader device in which a finger is slid on the fingerprint sensor, and a positioning structure that causes a first joint portion of a finger to be positioned at the center point of the fingerprint sensor includes a sensor movement mechanism, which keeps the fingerprint sensor at a position bulging from a slide surface on which the finger is slid when the fingerprint sensor is not pressed down, and which allows the fingerprint sensor to move upon being pressed down.
