Methods and image forming systems for approximating the value of a function given specified values of input data using a sparse lookup table. The slipcover has back pleats located at the respective back corners and having pleated seams and elastic, which runs through the pleated seams and travels across the back pleats for allowing the slipcover to expand over the largest perimeter of the furniture and then relax to fit the base of the furniture as the slipcover is placed on the furniture. The digital media communication protocol, and in particular, the communication link, is further structured to bypass at least one security measure, such as, for example, a password, security key, andor firewall.