In the future, drones will serve as our security guards. Aptonomy is already working on such a solution. Its intelligent security drones patrol your property and deter crimes. They can navigate around obstacles and get back to their charging station automatically.
These self-flying security drones require no supervision. You can deploy one or a team of drones. It is also possible to dispatch a drone to any corner of your property by tapping on a location on your smartphone. More info is available here.