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USPS and 4 State Barcodes in LEADTOOLS

LEADTOOLS supports several 2-state and 4-state barcode symbologies employed throughout the world by various post mail office systems. These barcodes are comprised of bars of different heights as opposed to the different widths that most linear 1D barcodes employ. The 2-state barcodes are able to encode the digits 0-9 and are effectively used for zip codes, routing, and tracking numbers. The 4-state barcodes can encode alphanumeric characters and can encode the entire address information.

Postal Numeric Encoding Technique (POSTNET)

POSTNET was developed by the United States Postal Service (USPS) to represent the 5- or 9-digit ZIP code, or an 11-digit "Delivery Point Code" of US destination addresses. A POSTNET symbol can be printed upon an envelope and used to facilitate faster sorting of mail.

Sample Barcode

Symbology
BarcodeSymbology.PostNet		POSTNET symbols are printed on flat pieces of mail such as magazines and envelopes.

Barcode Support

Data Options	Member
LEADTOOLS Symbology Identifier	BarcodeSymbology.PostNet
Data Class	BarcodeData
Read Options	PostNetPlanetBarcodeReadOptions
Write Options	PostNetPlanetBarcodeWriteOptions

Post Alpha Numeric Encoding Technique (PLANET)

PLANET is similar to POSTNET in that it uses half and full height bars to encode data, always begins and ends with a full bar, and digits are represented using a two of five code. The major difference between POSTNET and PLANET is that in POSTNET full bars represent "on" bits, while in PLANET full bars represent "off" bits.

Sample Barcode

Symbology
BarcodeSymbology.Planet		PLANET is used by the United States Postal Service to identify and track mail during delivery.

Barcode Support

Data Options	Member
LEADTOOLS Symbology Identifier	BarcodeSymbology.Planet
Data Class	BarcodeData
Read Options	PostNetPlanetBarcodeReadOptions
Write Options	PostNetPlanetBarcodeWriteOptions

USPS 4-State Customer Barcode (USPS4CB) / Intelligent Mail Barcode

Intelligent Mail Barcode, more commonly known as 4-State Customer Barcode or USPS4CB, is a 65-barcode used by the United States Postal Service for domestic delivery. It is designed to provide improved functionality and information than its predecessors (POSTNET and PLANET).

Sample Barcode

Symbology
BarcodeSymbology.USPS4State		Intelligent Mail Barcode effectively combines the routing ZIP code and tracking information into a single barcode.

Barcode Support

Data Options	Member
LEADTOOLS Symbology Identifier	BarcodeSymbology.USPS4State
Data Class	BarcodeData
Read Options	FourStateBarcodeReadOptions
Write Options	FourStateBarcodeWriteOptions

Royal Mail (RM4SCC) / CBC (Customer Barcode)

The RM4SCC symbol is used by the Royal Mail Cleanmail service.

Sample Barcode

Symbology
BarcodeSymbology.RoyalMail4State		The Royal Mail Service has specific requirements placed upon this symbol to ensure maximum readability and efficiency during the mail routing process.

Barcode Support

Data Options	Member
LEADTOOLS Symbology Identifier	BarcodeSymbology.RoyalMail4State
Data Class	BarcodeData
Read Options	FourStateBarcodeReadOptions
Write Options	FourStateBarcodeWriteOptions

Australian Post - 4 State

Australian Post - 4 State is used by Australia Post for Postal code and automatic mail sorting. Australian Post has chosen the 4-State barcode, a derivation that is already used successfully by other postal administrations.

Sample Barcode

Symbology
BarcodeSymbology.AustralianPost4State		Australian Post comprises four types of bars (the four states), each of which has a distinct name, value, and barcode symbol.

Barcode Support

Data Options	Member
LEADTOOLS Symbology Identifier	BarcodeSymbology.AustralianPost4State
Data Class	BarcodeData
Read Options	FourStateBarcodeReadOptions
Write Options	FourStateBarcodeWriteOptions