Drones get dangerous

A file picture of Spark, a small drone popular among hobbyists. It is a powerful little machine that can fly up to 300m high and as far as 3.5km away.

DIY drones can be easily modified to carry payload or celltower jammers, and to make it worse, radar mistakes them for birds.

The growing popularity of drones, especially DIY ones, could turn out to be a menace – not only are there people looking to weaponise drones, they can be used for spying and accidents can be caused by clueless owners.