We have already covered a bunch of robot security guards here in the past. Aptonomy is working on self-flying security drones to prevent crime. These flying security guards will patrol outside your property and deter crime. They can fly around obstacles and return to their base to get recharged.
Aptonomy’s flying machines have day and night-vision cameras, a powerful strobe light, and audio speakers. They can be dispatched to any corner of your property by tapping on a location on your smartphone.