PROBABILITY-MODELS FOR ACCESS SECURITY SYSTEM ARCHITECTURES

This paper presents probability models of access control security syst em architectures. Access control is the process of screening objects; for example people, baggage, entering a secured area in order to detec t and prevent entry by threats such as unauthorized personnel, firearm s, explosives. A security system architecture consists of device techn ologies, as well as operational policies and procedures for utilizing the technologies. The probability models are developed based on Type I (a false alarm is given) and Type II (a threat is not detected) error s. The concept of controlled sampling, in which objects may take diffe rent paths through the system, is introduced. New architectures consis ting of multiple devices and controlled sampling are proposed and anal yzed. The results presented indicate that for specific threat levels, multiple-device systems can be identified which outperform single-devi ce systems for certain error probability measures.