Abstract: A system for monitoring a storeroom includes at least two radio frequency identification (RFID) readers/antennas that are configured to detect RFID tags attached to items or individuals. The RFID readers/antennas are positioned and configured to sequentially detect an RFID tag attached to an item or an individual as the item or individual moves into or out of a storeroom. The order in which the two RFID readers/antenna detect the RFID tag provide an indication of whether the tagged item or individual is moving into or out of the storeroom. A processing system coupled to the RFID readers/antennas can monitor the movement of goods and individuals into and out of the storeroom and automatically update an inventory of the storeroom based on the determined movements of goods and individuals.