When the Tokyo Marathon was held on Feb. 26, major security firm Secom Co. lifted a balloon equipped with cameras from a building near the finish line in front of JR Tokyo Station and deployed vehicles equipped with a radar system that can detect drones.
The building stands at 35 meters, and the balloon, connected with a wire from the roof, was equipped with two kinds of cameras, one with a zoom lens and another showing thermal images, according to Secom adviser Tsuneo Komatsuzaki.
In addition, the firm deployed vehicles equipped with radars to detect drones, as well as cameras worn by security guards and stationary cameras to monitor the entire area.