A mobile terminal comprising: a display unit adapted for objects corresponding to at least one selected application from among multiple applications executable on the mobile terminal being output on the display unit in a locked mode; a camera; a user identification unit adapted for recognizing with the camera a user's face and identifying that the user is USER N or a preset owner of the mobile terminal; and a controller adapted for: executing one application in response to a touch input on one object before recognizing a user's face by the user identification unit, and, displaying, on the display unit of the mobile terminal, a user interface of a guest mode; wherein the user identification unit is adapted for identifying that the user is USER N or a preset owner of the mobile terminal during executing the one application by the controller; and wherein the controller is further adapted for changing the user interface of a guest to a user interface of the USER N or a user interface of owner, the user interface of the USER N including objects assigned to USER N and the interface of owner including objects assigned to owner, when the user identification unit has identified that the user is USER N or the owner during executing the one application by the controller. a display unit adapted for objects corresponding to at least one selected application from among multiple applications executable on the mobile terminal being output on the display unit in a locked mode; a camera; a user identification unit adapted for recognizing with the camera a user's face and identifying that the user is USER N or a preset owner of the mobile terminal; and a controller adapted for: executing one application in response to a touch input on one object before recognizing a user's face by the user identification unit, and, displaying, on the display unit of the mobile terminal, a user interface of a guest mode; wherein the user identification unit is adapted for identifying that the user is USER N or a preset owner of the mobile terminal during executing the one application by the controller; and wherein the controller is further adapted for changing the user interface of a guest to a user interface of the USER N or a user interface of owner, the user interface of the USER N including objects assigned to USER N and the interface of owner including objects assigned to owner, when the user identification unit has identified that the user is USER N or the owner during executing the one application by the controller. executing one application in response to a touch input on one object before recognizing a user's face by the user identification unit, and, displaying, on the display unit of the mobile terminal, a user interface of a guest mode; wherein the user identification unit is adapted for identifying that the user is USER N or a preset owner of the mobile terminal during executing the one application by the controller; and wherein the controller is further adapted for changing the user interface of a guest to a user interface of the USER N or a user interface of owner, the user interface of the USER N including objects assigned to USER N and the interface of owner including objects assigned to owner, when the user identification unit has identified that the user is USER N or the owner during executing the one application by the controller.