united states postal service tracking barcode

United states postal service tracking barcode code#
United states postal service tracking barcode zip#

The encoding includes an eleven-bit cyclic redundancy check (CRC) to detect, but not correct, errors. So the 65 bars (or 130 bits) encode a 114-bit message. The total number of characters is two times 1365, or 2730. The number of characters can be calculated from the binomial coefficient. The characters are interleaved throughout the symbol. Consequently, single-bit errors in a character can be detected (toggling one bit results in an invalid character). The Hamming distance between characters is at least 2. Each character has 2, 5, 8, or 11 of its 13 bits set to one. The 65 bars represent 130 bits (or 39.13 decimal digits), grouped as ten 13-bit characters. Each bar contains the central 'tracker' portion, and may contain an ascender, descender, neither, or both (a 'full bar').

United states postal service tracking barcode code#

The code is made up of four distinct symbols, which is why it was once referred to as the 4-State Customer Barcode. The Intelligent Mail barcode is a height-modulated barcode that encodes up to 31 decimal digits of mail-piece data into 65 vertical bars. Symbology The four types of symbols in an Intelligent Mail barcode. Use of the barcode provides increased overall efficiency, including improved deliverability, and new services. The barcode is applied by the sender the Postal Service required use of the Intelligent Mail barcode to qualify for automation prices beginning January 28, 2013.

United states postal service tracking barcode zip#

It effectively incorporates the routing ZIP Code and tracking information included in previously used postal barcode standards. The complete specification can be found in USPS Document USPS-B-3200. An Intelligent Mail barcode has also been referred to as a One Code Solution and a 4-State Customer Barcode, abbreviated 4CB, 4-CB or USPS4CB. The IM barcode is intended to provide greater information and functionality than its predecessors POSTNET and PLANET. The term 'Intelligent Mail' refers to services offered by the United States Postal Service for domestic mail delivery. The Intelligent Mail Barcode ( IMb) is a 65-bar barcode for use on mail in the United States. JSTOR ( December 2010) ( Learn how and when to remove this template message)Ī possible Intelligent Mail Barcode for the Wikimedia Foundation address.Unsourced material may be challenged and removed.įind sources: 'Intelligent Mail barcode' – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.