The invention is directed to forming duplex prodrugs that provide significant increase in the transdermal flux of drugs across human skin. The conformal EMI shield includes a thermally conductive dielectric coating adhering directly to surfaces of the printed circuit board to provide an electrically nonconductive, thermally conductive, contiguous coating that covers all such printed circuit board surfaces. For example, a follower is rotatably supported on the base and the pin is extended from the follower and engaged in the middle portion of the casing to swing the casing when the follower is rotated relative to the base. The wireless LAN unit may be conveniently integrated with a blank faceplate covering substantially all of the external bay opening, or a drive faceplate, such as a removable media faceplate. The method includes using the ionic current for determining the transmission state of the electrochromic device. A robot 10 has a first arm 12, a second arm 11, and a pitch model for indicating an arm position corresponding to a pitch of the theremin The robot 10 plays the theremin by moving the first arm 12 to the arm position corresponding to a musical note based on the target note and the pitch model.