242 RFID and Auto-ID in Planning and Logistics
to work with other auto-ID technologies in the short run, this type of approach will be necessary to
realize organizational savings.
A practical example of how the integration of multiple RFID technologies that operate at dif-
ferent frequencies can be modeled in control frameworks so that RTI can be used to determine an
inventory policy is given as follows: a high frequency (HF) 13.56 passive tag is used to track retail
over-the-counter drugs at the item level, ultrahigh frequency (UHF) 915 MHz passive RFID tags
can be used to track inventory at the case, and pallet level inventory, and UHF 433 MHz active tags
track the status of inventory on tractor trailers. Popular industrial literature assumes ...