I searched the patent files and could not find a similar product, therefore, I wish to obtain a patent on my invention. Each cycle of the signal may have an off period which is substantially attenuated but not always zero due to leakage of a dimmer control from which the chopped AC voltage originates, and an on period which substantially tracks the AC voltage. The method facilitates executing a tagging method stored in a memory device that reads the case information, determines whether a part of the case information is desired information, and then tags the desired information.