Transferring a package from a source location to a target location, including obtaining the package from a shipper at the source location, the package containing no indication of the target location; affixing to the package a unique identifier; storing, in a package routing system, the unique identifier, and associating therewith, information identifying the target location; transporting the package toward the target locations associated with the unique identifier; and delivering the package to the target location associated with the unique identifier in the package routing system.