A user requests a package delivery from a package delivery system. The package delivery system provides the user with a machine-readable code for display at the delivery location. An aerial delivery device receives, from the package delivery system computing device, information associated with the delivery location of the package. The information comprises information matching the information in the machine-readable code associated with the delivery location and a delivery address. The delivery device secures the package for transporting to the delivery location and transports the package to the delivery address. The delivery device locates the machine-readable code on a display at the delivery address and verifies that the information from the machine-readable code is associated with the package. The delivery device deposits the package on the display.