A card reader is associated with each gaming machine on a network and a card is associated with each player. A player account accessible by a host computer on the network is created that associates the player's card with the account. A promotional credit is applied to the player's account. In a complementary...http://www.google.co.uk/patents/US6800030?utm_source=gb-gplus-sharePatent US6800030 - Method for providing incentive to play gaming devices connected by a network to a host computer
Method for providing incentive to play gaming devices connected by a network ...