A spacing device and related method for improving readability of a container of RFID tagged items that are in relatively close proximity to each other is disclosed. The spacing device is preferably a low dielectric constant spacing device, wherein the nature of the device can be varied to create different effects on the readability of the RFID tagged items by preventing them from occupying areas with a large amount of material between the RFID tagged items and the RF reader. The spacing device is added into the container as the RFID tagged items are loaded into the container, and is preferably positioned in the center of the container. The spacing device can have a number of different dielectric, conductive and physical structures, and may be designed to be disposable, recyclable or re-used as needed.