Abstract: A mobile terminal includes a main body, a display, a controller, memory, and a component module. The controller receives locked state information and module identification information of the component module and determines that the component module is a registered component module. The controller further identifies the component module as accessible when the component module is the registered component module or the locked state information indicates that the component module is in the unlocked state, connects to the component module. The controller further changes the locked state information from the lock state into the unlocked state, and deletes the module identification information of the component module from the memory.

Abstract: There is disclosed a mobile terminal including a main body, a controller mounted in the main body and comprising a controller memory, and at least one component module assembled or attached to the main body, wherein the controller compares locked/unlocked state information and identification information of the component module with identification information registered in the controller memory and checks accessibility of the component module based on the result of the comparison, and when the component module is accessible, the controller controls functions of the component module or a locked state of the component module.