Japanese retailer Mitsukoshi is said to be expanding its item-level tagging program as well. According to published reports, the retailer credits item-level RFID tags with helping boost sales by 13 percent in the women's shoe department at its flagship store in Tokyo. Mitsukoshi is currently using the technology at seven stores across Japan and may introduce it at its U.S. stores in Orlando, Fla., and Honolulu later this year.