Thanks for your interest in the Mobile Barcode Promotion from the U.S. Postal Service.® The promotion ended on August 31, 2011. We hope you will continue to consider using mobile barcodes for your promotional mailings. While you are here, please take a moment to refer to the “Resources” link above and the article at the right for helpful information on the benefits of mobile barcodes.
So what is a "mobile barcode" anyway?
A mobile barcode or QR code (short for Quick Response code) is a specific two-dimensional code readable by dedicated QR code readers and smartphones. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be text, URL or other data.