In the ASX you are required to register the titles of your securities. CHESS handles the simultaneous transfer of the securities' titles as well as money. The ASX Settlement and Transfer Corporation (ASTC) operates CHESS to increase efficiency within the ASX.
The average invester will rely on a stockbroker to access CHESS and register his or her securities. This is because participants need to be authorized by the ASTC or sponsored by a participant to access CHESS.