iRobot Roomba j7 vs Other robot vacuum which uses LiDar laser. Obstacles like pet waste, charging cords and shoes don’t get in the way of the j7/j7 finishing the whole job because it uses PrecisionVision Navigation to recognize objects. When it first spots them, it will send you a photo so that you can tell it to avoid or clean around the obstacle in the future. It doesn’t just learn your home; it reacts to it in real-time. ​ To know more about it, you may watch the live demo at our partner reta