The Postal Service scans the barcodes on extra services labels and creates electronic records of the scans. These records are stored in a centralized database that interfaces with many other Postal Service databases to permit retrieval of this information for internal purposes and for Postal Service customers.
Customers who print their own barcoded labels can receive delivery status information, which includes the date and time of delivery in bulk (see chapter 3). Even though PS Form 3811 has no barcode, customers can receive return receipts electronically in bulk by participating in the Bulk Proof of Delivery (BPOD) program.