November 1, 2006
      
                  
        
  Author(s)
  David  Ritter,   Bernhard  Isler,   Hans-Joachim  Mundt,   Stephen J. Treado
 
       
            
    
    
        This article discusses the proposed additions to the BACnet standard to accommodate access control systems. The relationship of the BACnet model to typical building access control systems is described, and the new BACnet functionality outlined.