Switchable Glass is a type of glass that can change its transparency or opacity when an electrical current is applied. This technology allows users to control the amount of light and heat that passes through the glass, making it useful for various applications, including windows, skylights, and privacy screens. There are different types of switchable glass, such as electrochromic and liquid crystal glass. Electrochromic glass changes color when voltage is applied, while liquid crystal glass becomes opaque when electricity flows through it. Both types enhance energy efficiency and provide privacy on demand.