Sensors are devices that can detect the current state of or changes in physical aspects of the environment (temperature, light, moisture, pressure, and so on) and send signals to electronics that may then respond. Widely used in cars, appliances, buildings, electronic devices, medical devices, and many other kinds of applications, sensors are essential components of robots and robotic systems. WPI experts on sensors are employing sensors in all sorts of ways, including using vision sensors to help robots sort waste, using wireless bioelectric sensors in prosthetics, adding touch sensors to gloves used to teleoperate robots, and developing mathematical tools to help autonomous devices sift through reams of sensor data.