The technology that uses sensor technology for tracking environmental variables is known as Internet of Things (IoT). IoT devices, equipped with various sensors, can monitor parameters like temperature, humidity, air quality, and light levels in real-time. This connectivity allows for the collection of valuable data that can be analyzed to improve environmental conditions and inform decision-making in areas like agriculture, smart cities, and energy management. The integration of sensors promotes efficiency and sustainability while enhancing overall awareness of changing environmental factors.