“Revellers at a South African outdoor rock festival no longer need to queue to slake their thirst — a flying robot will drop them beer by parachute. After clients place an order using a smartphone app, a drone zooms 15 metres (50 feet) above the heads of the festival-goers to make the delivery. Carel Hoffmann, director of the Oppikoppi festival held on a dusty farm in the country’s northern Limpopo province, said the app registers the position of users using the GPS satellite chips on their phones. ‘The delivery guys have a calibrated delivery drone. They send it to the GPS position and drops it with a parachute,’ he explained.”
