Companies are already exploring using robots to patrol their property and deter crime. Aptonomy’s self-flying security drones also want to be your security guard. They fly autonomously to monitor your property and keep threats at bay. These machines come back to their station to recharge. They can navigate around obstacles intelligently.
These drones have day & night-vision cameras, a strobe light, and audio speakers. A team of them can be deployed to deal with threats. You can dispatch a drone to any location around your property by tapping on the map on your phone. More info is available here.