A consumer-privacy advocate says the nation's largest shaving-products manufacturer, in conjunction with an umbrella research group, is developing "smart shelf" in-store technology that not only tracks products but also builds an identity profile of the consumer doing the buying. Close-up of RFID tag. According to published reports, the technology in question – Radio Frequency Identification, or RFID – uses a microchip with an antenna capable of sending out a signal that enables a computer to "see" the product. As WorldNetDaily has reported, RFID technology is being considered for use by companies such as Wal-Mart to track inventory in distribution centers....