RFID tags store information or an identifier according to an item to which they are attached; special tag-readers obtain this information over a wireless channel when within range. Readers then communicate to a centralised server, which manages the information in real-time: providing traceable, up-to-date and very accurate information. Several frequencies can be used for the wireless communication between readers and tags; each having different properties of range, material penetration and data speed appropriate to the particular environment.

Of course RFID technologies are not appropriate in all circumstances and have limitations in particular environments. The key to unlocking the potential of this powerful technology is to understand your business, understand your processes and from this, understand how RFID could provide a new paradigm in information monitoring and control.