Patent ID: 7786844

Claim:
A method of detecting RFID tagged items being moved by a mobile asset/vehicle, the method comprising: actuating an RFID reader coupled to the mobile asset/vehicle to read identifications of proximately located RFID tagged items a first time at a first location after loading of the mobile asset/vehicle and storing a first set of read RFID tagged items, the first set of read RFID tagged items including RFID tagged items loaded onto the mobile asset/vehicle and RFID tagged items not loaded on the mobile asset/vehicle; actuating the RFID reader to read identifications of proximately located RFID tagged items a second time at a second location before the next unloading of the mobile asset/vehicle and storing a second set of read RFID tagged items, the second set of read RFID tagged items including RFID tagged items loaded onto the mobile asset/vehicle and RFID tagged items not loaded on the mobile asset/vehicle, the second location being different from the first location and a reading range of the RFID reader at the second location not overlapping with a reading range of the reader at the first location; comparing the first set of read RFID tagged items to the second set of RFID tagged items to identify RFID tagged items listed in both the first set and the second set; and identifying the RFID tagged items listed in both the first set and the second set as the only items being transported by the mobile asset/vehicle.