The present invention generally relates to a system and method for distributing an open transaction instrument. The system includes the steps of: accessibly offering for sale, in a retail environment, the open transaction instrument; selling a selected open transaction instrument; and enabling the use...http://www.google.com.tw/patents/US7458509?utm_source=gb-gplus-share專利 US7458509 - systems, methods and devices for selling transaction instruments
