RFID system lets New York City keep better tabs on firefighters' whereabouts
relay that information to the city's Operations Center. Invented by the U.S. Naval Research Laboratory's, or NRL, Space Systems Development Department and radio frequency identifier firm Manning RF in close partnership with the New York City Fire Department, the system is based on an active RFID tag that firefighters carry. It works similar to E-ZPass, the electronic toll-collection system, or how retailers track inventory.