Motion detection is a technology that identifies movement in a specific area. It is commonly used in security systems, where cameras or sensors monitor for any activity. When motion is detected, the system can trigger alarms, send notifications, or start recording video footage. This helps enhance safety and security in homes and businesses. There are various methods of motion detection, including passive infrared sensors, which detect heat emitted by objects, and video analysis, which uses algorithms to identify changes in a scene. These technologies are widely used in applications such as home automation, surveillance, and smart lighting.