PDLC (Polymer Dispersed Liquid Crystal) film or more commonly known as smart film consists of a thin film of liquid crystal that sits between two conductive transparent plastic layers. It has the ability to change its properties and appearance by changing the current running through the liquid crystal. During its “off” state, the liquid crystals are in a disordered, misaligned state that prevents light from penetrating the film, rendering it opaque. When a voltage between 24 to 100 volts are applied the crystals are arranged to allow light to pass through delivering a transparency between 55% to 85%. By controlling the amount of voltage applied, the degrees of transparency in smart film can be controlled.