A system is described for facilitating an Internet-based game of chance, particularly a computer-based version of a punchboard game having a grid with prizes associated with the various grid locations. The user can pay a central controller for each selection by providing a credit card number, or through...http://www.google.de/patents/US6203427?utm_source=gb-gplus-sharePatent US6203427 - Method and apparatus for securing a computer-based game of chance
