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Re:Amazon to deliver by drone? Don't believe the hype by pjc50 on Monday December 02, 2013 @09:06AM (#6833666)
Devices that do this already exist and have done since 1983: Tomahawk cruise missiles. Huge areas of military technology have been developed for precisely delivering explosives; now they are being repurposed for non-harmful use.

GPS is certainly enough to fly it to the visual vicinity of your house. I can imagine needing to supply a landing marker (large QR code?) to tell it exactly where to land.

Re:Amazon to deliver by drone? Don't believe the hype by jsmcgd on Monday December 02, 2013 @10:39AM (#6834262)
A QR code is a nice idea. Another solution could be to take a picture or a short video of the place you want the drone to leave the package. Machine vision technology is easily sophisticated enough to translate this into an accurate 3D model which could be correlated with known GPS information.

This kind of process will probably happening anyway for hazard avoidance.