A method of controlling a device includes determining a distance between the device and a hovering inputter; determining 3-dimensional (3D) location information of a hovering input based on the distance; selecting a task among a plurality of tasks corresponding to an operation of an application executed by the device and the 3D location information of the hovering input; determining a class of an execution input according to the hovering input; and performing the selected task according to the determined class of the execution input.