A content usage right issuing terminal (2) issues a content usage right to a portable terminal (3) of a user who visits a store. In response to a request from the portable terminal (3) that has the content usage right, an in-store server (1) sends a content to the portable terminal (3) via a wireless...http://www.google.co.uk/patents/US20040140353?utm_source=gb-gplus-sharePatent US20040140353 - Area-based content delivery method and system
