Disclosed is a method for controlling a command input device. The method includes: sensing contact between a home appliance and the command input device; based on sensing the contact between the home appliance and the command input device, determining the home appliance as a target home appliance to be controlled by the command input device; and based on the determination of the home appliance as the target home appliance to be controlled by the command input device, activating a remote controller provided by the command input device and configured to control the target home appliance.