The sensors help the robot maneuver itself and identify other cockroaches. One recent challenge was to find a way to add pheromones to the robot which would allow it to communicate and build trust with the other cockroaches. With the help of chemical sensors, the robot is able to emit the cockroach chemical signal that is present on the surface of cockroaches. With these sensors, the robot attracts the other cockroaches. If it does not have them, it scares them away because the cockroaches think it is a predator.