A glasses-type terminal comprising: a main body (201, 202) configured to be worn as glasses on a user's head; a display unit; 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: recognize that the main body (201, 202) is being worn as glasses through at least one sensor mounted on the main body, characterized in that, the controller is further configured to: activate the first microphone and the second microphone and display on the display unit a locked screen in response to that the main body (201, 202) is being worn as glasses is recognized; receive a voice input corresponding to a set specific word; in response to the voice input, match the vibration signal detected through the first microphone of the input voice and the voice signal detected through the second microphone of the input voice to the pre-registered vibration signal and the pre-registered voice signal; 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 and display a unlocked screen in response to the unlocked state. a main body (201, 202) configured to be worn as glasses on a user's head; a display unit; 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: recognize that the main body (201, 202) is being worn as glasses through at least one sensor mounted on the main body, characterized in that, the controller is further configured to: activate the first microphone and the second microphone and display on the display unit a locked screen in response to that the main body (201, 202) is being worn as glasses is recognized; receive a voice input corresponding to a set specific word; in response to the voice input, match the vibration signal detected through the first microphone of the input voice and the voice signal detected through the second microphone of the input voice to the pre-registered vibration signal and the pre-registered voice signal; 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 and display a unlocked screen in response to the unlocked state. recognize that the main body (201, 202) is being worn as glasses through at least one sensor mounted on the main body, characterized in that, the controller is further configured to: activate the first microphone and the second microphone and display on the display unit a locked screen in response to that the main body (201, 202) is being worn as glasses is recognized; receive a voice input corresponding to a set specific word; in response to the voice input, match the vibration signal detected through the first microphone of the input voice and the voice signal detected through the second microphone of the input voice to the pre-registered vibration signal and the pre-registered voice signal; 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 and display a unlocked screen in response to the unlocked state. activate the first microphone and the second microphone and display on the display unit a locked screen in response to that the main body (201, 202) is being worn as glasses is recognized; receive a voice input corresponding to a set specific word; in response to the voice input, match the vibration signal detected through the first microphone of the input voice and the voice signal detected through the second microphone of the input voice to the pre-registered vibration signal and the pre-registered voice signal; 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 and display a unlocked screen in response to the unlocked state.