But underneath all this hoopla, progress is certainly being made. London-based Bizzby Sky has begun trials of its autonomous drone delivery service, claiming it is capable of shipping small objects at the touch of a smartphone button.

The Bizzby Sky team has engineered its drones over a number of years at London's TechCity, Britain's answer to Silicon Valley. Their system is aimed at tapping into the ubiquity of smart devices and enable anybody to book their own delivery drone within seconds.

Say you've got one of those semi-emergencies, such as a family member locked out of the house or the delicious sandwich you made for lunch this morning sitting neglected on the kitchen counter. Through the Bizzby Sky app, a user can request a drone, select the delivery location and the type of item to be shipped.