Abstract: A flexible pH sensor having a unique stacking of layers is described. The sensor may be used in various applications. Methods of manufacturing the flexible pH sensor are also described, including the manner in which iridium oxides are provided.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.