Handheld tactical devices combining a weapon with an emission generator, and specifically combinations of a tubular handle with a detachably securable knife blade or baton body, together with a flashlight or chemical spray device removably insertable in the tubular handle. The illumination panel may have roughly the thickness of a credit card and may be positioned via the flexible neck portion. Embodiments of the invention provide a novel user interface on the home appliance to make the system accessible to people with disabilities. Set screws 16 are accessed through holes 14a in pedals 14 from above. That referenced credential may be accessed from the same electronic message, or from some other location. The device and method also provide a p-channel field effect transistor having a shallow trench isolation with an overhang that overhangs Si\u2014SiO2 interfaces in a direction transverse to current flow.