[niqolas]

This could also be an awesome way to disrupt the courier business in cities.

e.g. sender logs a job online (& provides payment details), sender prints a barcode sticker, sender drops off package with the building doorman/concierge and/or walks to designated quadcopter landing zone adjacent building, outgoing package scanned and loaded onto quad-copter, quad-copter delivers package to recipient's landing zone, quad-copter/system sends notification to recipient to advise that package has been delivered, recipient goes to quad-copter landing zone to collect package, recipient scans barcode or provides electronic signature to acknowledge receipt.

Terms & Conditions: Anyone who implements this idea (or minor variation) must give hook and I a $1 royalty each for every job logged ;)