POSTNET (Postal Numeric Encoding Technique) was designed by U.S Post Office for encoding zip code information. POSTNET helps in refining speed and delivery of mails.

Character set of POSTNET barcode symbology

In PLANET barcode symbology, character set comprises of numbers (0-9) containing a length of 12-14 digits.

Structure of POSTNET barcode symbology

The structure of POSTNET barcode symbology has start/stop character in form of full bars, numbers (0 to 9) of variable length. Each character is represented using five bars – three of them are small and left three includes long bars. The symbol also contains a check digit (calculated according to modulo 10).

Applications of POSTNET barcode symbology

POSTNET is mainly used for tracking zip code information and improving speed & delivery of mails in United States Postal Office.

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