Depth sensors are devices that measure the distance between the sensor and objects in their environment. They use various technologies, such as infrared, ultrasonic, or laser, to determine how far away an object is. This information is often used in applications like robotics, gaming, and augmented reality to help machines understand their surroundings. These sensors can create a three-dimensional map of an area by capturing depth information. This capability allows for improved navigation and interaction in various fields, including automotive safety systems, smartphones, and drones. By providing accurate distance measurements, depth sensors enhance the functionality of many modern technologies.