OneCode

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It has been suggested that this article or section be merged into Intelligent Mail Barcode. (Discuss)

OneCode^SOLUTION Barcode is a mailing barcode used by the United States Postal Service (USPS). Each barcode can be 20, 25, 29, or 31 digits long, depending on the type of ZIP code present. Each digit has four possible states, so one digit represents numbers 0-3.

The OneCode will be required for discounted entry into the mailstream in 2009.

Current implementations include a combination of PLANET (Confirm Service) and POSTNET, as well as a combination of ACS (Address Change Service) and POSTNET.

This barcode is creating problems for mailers using older ink jet technology printers, as the equipment manufacturer may not provide a font for the new barcode. This may cause many mailers' equipment to become obsolete when the new code is mandated in 2009.^{[citations needed]}

The USPS provides downloads of encoders and fonts, as well as a detailed encoding and layout specification (current specification).

One of the major benefits in the CONFIRM/POSTNET implementation is a unique identifier for every piece of barcoded mail in the USPS mailstream.