A slide-type input device, a portable device provided with the input device and a method and medium of using the input device, which more freely move a pointer displayed on a screen, and more conveniently and exactly select a specific object, is provided. The slide-type input device includes a slide button movable in a specific direction, a motion control hole providing a movement area of the slide button, a location-detection module detecting location-change information according to the movement of the slide button, and a controller controlling a pointer displayed on the screen based on the location-change information of the slide button, wherein the slide button is moved in the specific direction by an external force applied by a user, and is then returned to an original location by an elastic force when the external force of the user is removed.