A glasses-type terminal including a main body configured to be worn as glasses on a user's head; a first microphone configured to detect a vibration signal through a skull portion of the user in which a voice being input propagates through the skull portion of the user; a second microphone configured to detect a voice signal in which the voice being input propagates over the air; a memory configured to store a pre-registered vibration signal and a pre-registered voice signal corresponding to a pre-registered voice; and a controller configured to switch a locked state to an unlocked state when the vibration signal detected through the first microphone is matched to the pre-registered vibration signal and the voice signal detected through the second microphone is matched to the pre-registered voice signal.