A method provides for using a portable patron unit in a venue or in a vicinity of the venue. The method includes wirelessly connecting the patron unit to be in communication with the venue, and providing at least one display on the patron unit enabling a patron to place a patron order for at least one...http://www.google.co.uk/patents/US20110173092?utm_source=gb-gplus-sharePatent US20110173092 - PATRON SERVICE SYSTEM AND METHOD
