In a gaming establishment, a player feeds a general purpose charge card such as a VISA, MasterCard or AMERICAN EXPRESS card to a reader at a gaming machine or enters on a keyboard or other input device, information relating to the general purpose charge card, and keys in a desired amount of playing credit...http://www.google.fr/patents/US5559312?utm_source=gb-gplus-shareBrevet US5559312 - Gaming machine system operable with general purpose charge cards
Gaming machine system operable with general purpose charge cards
