One aspect of the present subject matter relates to a memory. The tray includes a groove part and is movable between a first position where the information recording medium is contained completely inside the frame and a second position where the information recording medium is exposed completely outside the frame. This confidence level is compared with a required trust level which is based at least in part upon the requirements of the second user, and the authentication result is based upon this comparison. Preferably simultaneously, the two movable display panels are also moved to an open configuration wherein they are exposed.