Solutions for illegal or privacy invade drones fly into a private area. To prevent the drone from interfering with the drone control, or cut off its video transmission. The term "drone" for some prompts images of airstrikes - but the sophisticated flying robots used on the battlefield are unlikely to be what we are talking about here. The vast majority of unmanned aerial vehicles are actually small, remote-controlled quadcopters used by hobbyists and photographers. These small devices are now a mainstream gadget, which can cost from under ￡40 to several thousands of pounds. Drones are also increasingly being used in industries such as construction and retail.