A group of English engineers have developed a new device for downing quadcopters that stray into restricted airspace: the SkyWall 100. This shoulder-mounted net launcher weighs 22 pounds and runs on compressed gas but does reportedly offer a 100-meter range with an 8-second reload time. What's more, the system uses a "smart scope" that automatically calculates the drone's distance and vector, informing the operator exactly where to aim. The netting will also deploy a small parachute once it wraps up the UAV -- certainly a more gentle alternative to using radio waves or 50mm Bushmasters. There's no word on price or availability yet, beyond assurances by the group that the first models will be available by the end of the year.