Fancy a pizza for dinner? Very soon in Auckland, New Zealand, customers will be able to have it delivered from the sky by drone. No people, no truck or motorbike, just a quadcopter drone programmed to find a hungry New Zealander's house and deliver their favorite pizza right to their door.

This week the Domino's Pizza company in New Zealand has successfully been able to show that a flying drone can carry and deliver pizza. The chain has teamed up with a drone delivery company called Flirtey. The new service will be rolled out in September of this year. New Zealand officially gave the OK to drone delivery last year, becoming one of the first countries to allow such services.

"With the increased number of deliveries we make each year, we were faced with the challenge of ensuring our delivery times continue to decrease and that we strive to offer our customers new and progressive ways of ordering from us," Domino's Group chief executive and managing director Don Meij told the New Zealand Herald.

In the US, drone delivery is harder because aviation regulators and the government has set very tight controls on who can fly drones and where they can go. Big companies like Amazon are already looking at the idea.

Nevertheless, few are quite as advanced as Kiwis, but it is not as easy as it might seem. The drone designers have to work out how to find a safe way though hard-to-predict dangers like power lines, moving vehicles and children playing in the backyard.

However one other important question still needs to be answered. How much should you tip a pizza delivery drone?