1. A radio frequency identification system comprising a load transporter having a load receiving space for receiving a radio frequency identification tagged item with a true tag, moved from an external region external to the load receiving space to the load receiving space of the load transporter; a radio frequency identification reader system for taking tag readings during movement of the true tag along a path from the external region to the load receiving space of the load transporter; and a processing system having true tag motional information as to predetermined or measured movement of the true tag along said path from the external region to the load receiving space, and comparing tag motional data based on the tag readings with the true tag motional information to establish whether the tag readings represent a true tag moving along said path to the load receiving space or represent an extraneous tag.