A control device is provided by the present invention. The method may include forming a conductor material over a substrate and patterning the conductor material to form two electrodes from the conductor material, wherein the two electrodes are separated by a sub-lithographic distance. Thus, pressing the press button can release a lock between the work rod and the positioning pin so that the work rod is swingable, while releasing the press button can lock the positioning pin and the work rod together again. The critical flow orifice is configured to allow for a relatively constant volumetric flow of the first gas through the critical flow orifice when the first gas attains a critical flow. Establishment of an envoy may be subjected to a myriad of tests to qualify the user, the requested communication, or both.