Sensor Servers
                
                    - object tracker server
- motion detector server
- action recognition servers
                        (2)
- scream detector server
Output Servers
                
                    - directional sound file
                        player server
- music server 
- lights server
- display servers (2)
RPC
                Communication is achieved using
                the RPC protocol. Each server program creates a
                library for the control program and a header file
                which completely describes the interface
                functions. The server architecture has proved
                quite effective by making it possible for
                different individuals to work on different
                components of the system using the computer most
                appropriate for the particular task.