A system comprising: a plurality of electric locks; a plurality of restricted areas where entry is restricted by the plurality of electric locks according to an authority associated with each piece of authentication information; a plurality of monitoring cameras that are disposed in the plurality of restricted areas; and an apparatus comprising: a first storage unit configured to store image data captured by each of the plurality of monitoring cameras, whereby image data captured by a monitoring camera disposed in a restricted area is stored in association with identification information of the monitoring camera and identification information of the restricted area; and an access control unit configured to permit access to image data captured by a monitoring camera in a restricted area only if the registrant corresponds to the authentication information that allows entry into the restricted area by a corresponding electric lock, the access control unit being adapted to verify correspondence of the registrant with the authentication information through reference to a correspondence table between at least one of the identification information of the monitoring cameras or the identification information of the restricted areas and identification information of the electric locks. a plurality of electric locks; a plurality of restricted areas where entry is restricted by the plurality of electric locks according to an authority associated with each piece of authentication information; a plurality of monitoring cameras that are disposed in the plurality of restricted areas; and an apparatus comprising: a first storage unit configured to store image data captured by each of the plurality of monitoring cameras, whereby image data captured by a monitoring camera disposed in a restricted area is stored in association with identification information of the monitoring camera and identification information of the restricted area; and an access control unit configured to permit access to image data captured by a monitoring camera in a restricted area only if the registrant corresponds to the authentication information that allows entry into the restricted area by a corresponding electric lock, the access control unit being adapted to verify correspondence of the registrant with the authentication information through reference to a correspondence table between at least one of the identification information of the monitoring cameras or the identification information of the restricted areas and identification information of the electric locks. a first storage unit configured to store image data captured by each of the plurality of monitoring cameras, whereby image data captured by a monitoring camera disposed in a restricted area is stored in association with identification information of the monitoring camera and identification information of the restricted area; and an access control unit configured to permit access to image data captured by a monitoring camera in a restricted area only if the registrant corresponds to the authentication information that allows entry into the restricted area by a corresponding electric lock, the access control unit being adapted to verify correspondence of the registrant with the authentication information through reference to a correspondence table between at least one of the identification information of the monitoring cameras or the identification information of the restricted areas and identification information of the electric locks.