A method for controlling a digital device according to one embodiment of the present specification may comprise the steps of: detecting a first control input for executing a first operation which is associated with a first configuration value and which is executable by utilizing a main device; transmitting, to the main device, a first triggering signal for executing the first operation on the basis of the first control input; detecting a second control input for executing a first operation which is associated with a second configuration value and which is not executable by utilizing the main device alone; detecting a cooperative device associated with the first operation; and providing a notification for the cooperative device.