An input device for an electronic device includes a gesture input device enabling a user to input a gesture by touching, and physically rotating, a rotation sensor sensing the physical rotation of the gesture input device, and a controller controlling the gesture input device. The gesture input device has a concave, downwardly inclined shape, and includes a curved section in a center portion of the gesture input device, and an inclined section around the curved section, and the inclined section includes a touch sensor configured to sense a user's touch input, and at least one rib raised or lowered according to a control signal from the controller.