operating a plurality of gaming machines each having at least one of {HEAD ~ a magnetic card reader} that accepts {TAIL ~ a player identification card} having a magnetic stripe and a fingerprint reader, wherein each gaming machine enables a user to play a base game, and wherein each gaming machine is selectively enabled to enable a rewards qualified user to play one or more system games 
accepts
operating a plurality of gaming machines each having at least one of { HEAD ~ a magnetic card reader } that accepts { TAIL ~ a player identification card } having a magnetic stripe and a fingerprint reader , wherein each gaming machine enables a user to play a base game , and wherein each gaming machine is selectively enabled to enable a rewards qualified user to play one or more system games
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH