Drones have carried explosives for terrorists overseas, dropped contraband into prisons and even landed on the White House lawn.
As the use of drones becomes more widespread among businesses and hobbyists, the safety and security challenges associated with the unmanned aerial vehicles are on the rise.
Even as drone-related businesses mushroom, another cottage industry is emerging to offer protection against unwanted drones. One of the early entrants in the drone defense business is a Columbia-based company known as Department 13.
The company's signature software, called MESMER, essentially takes over unwanted drones to block them from entering a protected area,...