A modular, temporary safety railing system that provides fall restraint protection during masonry wall construction projects includes a plurality of anchoring sleeves which are embedded in wet grout within a hollow cavity of a masonry block onto which posts and rail sections are assembled. A license corresponding to the DRM content is acquired from a service providing apparatus that provides the DRM content. The liquid crystal layer includes regions where the helical axes of the liquid crystal molecules in a focal conic state extend in regular directions within a plane that is substantially parallel to the surface substrate. The arrangement of the electrically-operated actuators prevents overheating thereof, and provides a storing space for disposing auxiliary equipment in a lower portion of the V-shaped space.