An access management apparatus receives a command message having setting and changing functions, performs corresponding processing, and transmits results. A checking unit checks the presence/absence of a data element to be accessed. Access is permitted based on looking up a setting access condition if...http://www.google.de/patents/US7296289?utm_source=gb-gplus-sharePatent US7296289 - Setting or changing an access condition for an access management apparatus and method of a portable electronic device