Control Engineering

RFID on the Production Line
Talk is cheap, but radio frequency identification (RFID) systems and tags are still relatively expensive. This is especially true if the tags are applied on a close to per-item basis and if they're not reused. So, when Wal-Mart told its top 100 suppliers in June 2003 that it wants RFID tags on all cases and pallets shipped to its distribution centers by January 2005, many started slapping, ship...