A method and system for providing controlled access to information stored on a smartcard. The system includes a data processing center maintained by a trusted third party for storing a database of authorizations of various service providers to access information pertaining to individuals, and for responding...http://www.google.com.tw/patents/US6131090?utm_source=gb-gplus-share專利 US6131090 - Method and system for providing controlled access to information stored on a portable recording medium
