A few years ago, NASA Langley Research Center developed a new technology called Safeguard. This software system monitors and lowers the risk of any remote-controlled drones flying into no-fly zones, including airports and military zones. The agency recently determined that it is safe to use in tests and demonstrations.
Safeguard offers a virtual safety net program that allows drone users to set the flying perimeters. If the drone goes beyond the authorized perimeters and does not turn back, the safety net will send the drone crashing to the ground.
Generally, it is a more accurate system to track drone’s movements, compared to geofencing which uses GPS signals attached to autopilot. If the GPS loses its signal, geofencing will lose its effectiveness to keep the drone from going beyond no-fly zones. However, Safeguard uses algorithms and does not rely on the external data stream.
NASA is planning to bring Safeguard to the market. It is a more reliable system for drone users to prevent their drones from getting killed.