A waterproof housing for a digital device includes front and rear bulkhead members for sealably holding a digital device having a touch screen. The touch screen is positioned to be viewed through a transparent surface of the rear bulkhead, which includes an aperture through which an actuator is sealably positioned. The actuator includes a shaft extending through the aperture, a control member connected to an outer end of the shaft, a stop member affixed to the control member for contacting the housing or engaging the recess, an extension member connected to an inner end of the shaft, a first probe affixed to the extension member near the shaft, and a second probe affixed to the extension member at an off-center position relative to a center axis defined by the shaft. The actuator is configured to selectively operate the first and second probes to execute touch motions on the touch screen.”