Smart glass, also known as switchable glass or privacy glass, refers to a high-tech material capable of altering its light transmission properties when voltage, light, or heat is applied. It can switch between transparent and opaque states, offering privacy, glare reduction, and energy efficiency. Applications of smart glass span various industries. In architecture, it enhances privacy in windows, sunroofs, and partitions while controlling sunlight and heat. In automotive, it improves comfort and safety by regulating light and heat transmission in car windows. Additionally, it's used in display cases, electronics, and healthcare for privacy or interactive purposes.