A barcode that reflects the delivery address, the carrier route and the order in which the location falls on the route. Wow
The POSTNET barcodes used on US mail contains information representing the address, Zip+4 and actual delivery point on the carrier's route. These barcodes allow the USPS to automate the sorting of the mail to the actual order in which the pieces are delivered on each route.
A POSTNET barcode that consists of 62 bars with beginning and ending frame bars and 5 bars each for the nine digits of the ZIP+4 code, the last 2 digits of the primary street address number (or post office box, etc.), and a correction digit. The DPBC allows automated sortation of letter mail to the carrier level in walk sequence.
A ZIP+4 barcode containing two additional digits (represented by 10 additional bars) that designate a specific delivery point.