Popular Science: With all the privacy concerns associated with drone usage, Rapere.io offers a counter-drone. "Simply take it outside, put it on the ground, and press the GO button. The Rapere will take off, while at the same time scanning the sky for drones. It can tell the difference between a bird and a drone, and will fly over top of any drone within range, then disable it." Rapere strikes with string by lowering a tangle line onto the rotors of its target:
Twelve 90fps VGA cameras pointing in every direction are used to guide the drone to it's target - hovering above the free floating target drone. Rapere says that detecting a free floating object which is well illuminated and far from any other visible object is easy. The counter-drone can burn lots of watts on the onboard computer, because of the short intercept flight time, which also simplifies the work.
With drones and anti-drones both using many cameras, it appears that image sensor market is set for a new explosive growth.