Compositions that act as a protective barrier for micronutrients, phytochemicals, and nutraceuticals such as may be found in food products, for example food additives. A delivery opening puts the chamber into communication with the exterior. Without user intervention, the component automatically installs an appropriate driver for the device upon connection of the device to the port. In the insertion process, the diameter of the current collection section is reduced or the diameter of the terminal section is expanded so that the outer diameter of the current collection section is equal to or smaller than the inner diameter of the terminal section, and then the current collection section is inserted into the terminal section. In another aspect of the invention, a plurality of phosphor layers are applied to the transparent layer to produce a color display when reflected electrons are attracted to the transparent layer. An output circuit receives the output of each Schmitt trigger circuit and generates an output signal having a value indicative of whether the output of the reference voltage generator is not within an acceptable voltage range.