The present disclosure is directed generally to a method and system to handle downloads of digital data files to portable computing devices. In a particular embodiment, the system includes a first system access point responsive to a first wireless access point at a first location; a second system access...http://www.google.com.hk/patents/US7533158?utm_source=gb-gplus-share專利 US7533158 - System and method for handling digital content delivery to portable devices
