According to the present invention, a service issuing system 1110 comprises identification number issuing means 1120 for issuing an identification number 1130 required to receive a service in accordance with an application from a user system 1210, encryption means 1150 for encrypting the identification...http://www.google.com.au/patents/US20020034305?utm_source=gb-gplus-sharePatent US20020034305 - Method and system for issuing service and method and system for providing service
