The present invention is a method of operating a notification and response system. First, a unique contact address is assigned to each of a multiplicity of persons in a region. Any of the multiplicity of persons may then become a user of the notification and response system by being registered with the...http://www.google.fr/patents/US20050031096?utm_source=gb-gplus-shareBrevet US20050031096 - Command synchronization method and system
