BENTONVILLE, Ark. -- In the first study of the effect of radio frequency identification (RFID) on product availability at outlets operated by Wal-Mart Stores here, researchers at the University of Arkansas, Fayetteville, found a 16% reduction in out-of-stocks. Additionally, the study, commissioned by Wal-Mart, showed that RFID helped replenish out-of-stock items three times faster than comparable items could be replenished using standard bar code technology. Wal-Mart has been engaged in a ...

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