What they found was that when an associate scanned items, the number of items scanned affected the read rate. For example, researchers scanned RFID items hung on a rounder. When there were 97 items, they found a 99.38 percent read rate. Compare that to the 89.89 percent accuracy of 180 items scanned.
The more RFID-tagged items retailers place on Z-bars or shelves, or in boxes, the lower the read rate will be when those items are scanned, according to a study out of the University of Arkansas. By setting up store-like scenarios in a university lab, researchers conducted three feasibility test scenarios of RFID tagged apparel and shoes.