A method and system for authorizing client devices to receive secured data streams through the use of digital certificates embedded in the client devices. The processor-implemented communication module is configured to receive provisioning information from a content provider. in a controlled auto-ignition engine, including in-situ evaluation of thickness of CCD, based on a sensor which monitors combustion. The toilet paper storage container can be placed within a pliable cover that encloses the storage container therein. A spool retainer is provided which is frictionally slidably connected to the pole member to retain a spool of line between the hub and retainer.