“A 3mm to 8mm layer of water-free foam material is sandwiched between the RFID adhesive label and the shipping unit, fixing a suitable air gap in place (the gap needed depends on the materials and environment involved). The air-padded RFID label can either be applied to the goods before or after the shrink-wrapping process, and is therefore ideal for use on pickup or sandwich pallets. The SpaceTag is fixed to the pallet in two steps: first, the Paxar 9855 RFID printer produces a regular RFID adhesive label with barcode in a single process. Second, that label is attached to the foam layer either manually or using a labeller, and then fixed to the shipping unit.”