Contixo F19 drone with 1080P Camera for Adults & Children – RC Quadcopter with four-way Obstacle Avoidance, Follow Me, Waypoint Fly, Altitude Hold, Headless Mode, 20 Mins Long Flight - Walmart.com
Drone detection and counter-drone (C-UAS) technology
Dedrone's counter-drone jammer uses science to stop drones in their tracks | TechCrunch