Alternative proposal: take the package to the customer's phone. At this sort of timing, "where I am now" is better than "where I usually am".
The customer must have a smartphone and place the order with Amazon's special app. The app then continually uploads the customer's gps data to Amazon so the drone can target. Once the drone gets close, the phone also gives a distinctive beacon using wifi for the drone to hone in on. When it's time to receive the package, the app displays a specific QR code and the drone scans it.
It's the customer's responsibility to be outside at the right time, but the app will tell them when to within a few minutes. Likewise, if the phone's battery dies during delivery, the delivery is aborted for a partial refund (the app provides warnings).
Some people will worry about accruing "failure to receive" charges due to Amazon's failings, but once a good track record is established, that will fade. Others will worry about the NSA seizing all that location data, but they already have it from the cell phone companies.
The customer must have a smartphone and place the order with Amazon's special app. The app then continually uploads the customer's gps data to Amazon so the drone can target. Once the drone gets close, the phone also gives a distinctive beacon using wifi for the drone to hone in on. When it's time to receive the package, the app displays a specific QR code and the drone scans it.
It's the customer's responsibility to be outside at the right time, but the app will tell them when to within a few minutes. Likewise, if the phone's battery dies during delivery, the delivery is aborted for a partial refund (the app provides warnings).
Some people will worry about accruing "failure to receive" charges due to Amazon's failings, but once a good track record is established, that will fade. Others will worry about the NSA seizing all that location data, but they already have it from the cell phone companies.