The CEO's Guide to RFID

While Wal-Mart, Target and other retailers have begun to require suppliers to use RFID tags on shipments, there have not been as many full-scale roll-outs of the technology as originally hoped and many companies have had a difficult time building a business case for RFID

http://www.businessweek.com/mediacenter/podcasts/guide_to_tech/guidetotech_10_09_06.htm