The rule has been substantially reworded to improve clarity. It has also been updated to specify that programs used are not rewritable; removes the external check in favor of type III game internal check algorithm using Internal Checksum or Cyclic Redundancy Check (CRC); specifies the requirement that before a slot machine may be cleared after a failed authentication has occurred, the supervising attendant must enter the time and date of the failure in a permanent record; specifies the requirement of and the procedures to be enacted if “complete and continuous” access to the facility based computer system is lost for a period of 90 minutes or longer, and removes the requirement for slot machines to maintain an internal record of RAM and ROM errors; specifies that authentication errors or RAM or ROM errors will require the game to cease play and illuminate the tower light.