The present invention provides a method and system for providing access to information of potential interest to a user. An index detecting step detects information about image coordinates of an index attached to the object from the image, and a placement information calculating step calculates the placement information by using the first and second measurement values of the first and second position and orientation sensors and the information about the image coordinates of the index. The biasing device functions between the intermediate member and the third lens group moving ring. The remote key manager then requests and obtains the new key from the protected key manager across the trustee link.