Playing tag

摘要

Wireless asset-tracking systems are causing a stir throughout the ranks of traditionally IT-conservative retailers. Wal-Mart is conducting field trials of wireless-enabled item labels that are embedded with tiny transmitters― technology that Gap already has piloted and Prada is parading in its flagship New York store. Other big-name retailers testing newfangled electronic tags include Ahold, Carrefour, The Home Depot, Marks & Spencer and Target. These retailers are trying out systems that are based on radio frequency identification (RFID) technology, which transfers item-identification data between wireless transponders and readers. RFID has been around for decades, a descendent of technology used during World War II to identify aircraft. Today, businesses use RFID gear to power toll-collection systems on highways, tag luggage at airports and track livestock.