valdean writes "The University of Wisconsin RFID Lab, principally funded by a dozen Wal-mart suppliers including 3M, Kraft Foods, and S.C. Johnson & Son, believes that RFID could spell the end of the ubiquitous bar code. The big draw? Speeding up supply-chain management. Wal-mart's warehouse conveyor belts presently move products at 600 feet per minute... but they want to be faster. And better informed."