Smart windows are advanced glass technologies that can change their properties in response to environmental conditions. They can adjust their tint or transparency based on sunlight, temperature, or even user preferences, helping to control heat and light in a building. This feature can lead to energy savings by reducing the need for heating, cooling, and artificial lighting. These windows often use materials like electrochromic or photochromic coatings, which react to electrical signals or UV light. Smart windows are increasingly used in commercial buildings, homes, and vehicles, contributing to sustainability and enhancing comfort for occupants.