Abstract: Disclosed are an input device in which an input key is located within the movement radius of a user's fingers, and a method for inputting a command using the input device. To this end, the input device according to the present invention comprises: an input key located within the movement radius of a user's fingers to be moved in the front, rear, left and right directions within the movement radius of the fingers, for inputting the variety of commands therethrough; a plurality of sensing means regularly arranged within the movement radius of the fingers, for sensing approach of the input key thereto or contact of the input key therewith to send a sensing signal; and a controller for receiving the sensing signal from the plurality o the sensing means, determining which one of the plurality of sensing means has sent the sensing signal thereto, extracting an inputted command based on the received signal, and instructing corresponding execution means to execute the extracted command.