And so it begins
Whether false alarms or real sabotage attempts, this will develop into the biggest game of wack-a-mole the world has ever seen.
All it needs is for the baddies to set up a drone on a fixed flight path, then bugger off.
Oh, and forget about registering and tracking devices. The designs are are so simple that anyone with a 3d printing kit and a tame electronics geek can build their own - at least good enough for a single flight.