operating a plurality of {TAIL ~ gaming machines} each having at least one of a magnetic card reader that accepts a player identification card having a magnetic stripe and {HEAD ~ 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 
operating a plurality of { TAIL ~ gaming machines } each having at least one of a magnetic card reader that accepts a player identification card having a magnetic stripe and { HEAD ~ 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 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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