A entrance-exchange structure and method of execution thereof, comprising a house and an activity of uncertain outcome (e.g., game of chance, game of skill, etc.) that is entered by a participant (e.g., a participant such as a player). The house pays the participant a takehome in relevant scrip, or cash...http://www.google.co.uk/patents/US20060052158?utm_source=gb-gplus-sharePatent US20060052158 - Entrance-exchange structure and method
