A method to search for affinities between subjects comprises registering a user with a certification authority, receiving first information relating to the user, memorizing the first information in a portable electronic device of the user, and synthesizing the first information by transmitting it to...http://www.google.com.hk/patents/US8156326?utm_source=gb-gplus-share專利 US8156326 - Method to search for affinities between subjects and relative apparatus
