Input device, electronic lock including the same, and method for controlling the electronic lock

An electronic lock comprising:

• an input device including a touch pad, a touch detector disposed at a rear portion of the touch pad, a printed circuit board connected to the touch detector, a plurality of light emitting devices mounted on the printed circuit board, a radio frequency antenna mounted on the printed circuit board, and a plurality of input elements and a verification element provided on a back surface of the touch detector;
• a locking mechanism connected to the input device;
• a control device which is configured to control the locking mechanism;
• a touch authentication module connected to the touch detector;
• and
• a wireless authentication module connected to the radio frequency antenna,
• wherein each input element of the plurality of input elements has at least two symbols that are formed in overlap with each other and in mutually different colors, and
• wherein the plurality of light emitting devices respectively emits light to the plurality of input elements.