A virtual interface is provided which allows a user to navigate through a representation of a physical target area, such as an office, school or home environment. Using the virtual interface, a user can alter the configuration of a system which transmits information to users via peripheral or background...http://www.google.de/patents/US20020149470?utm_source=gb-gplus-sharePatent US20020149470 - VIRTUAL INTERFACE FOR CONFIGURING AN AUDIO AUGMENTATION SYSTEM
