Industrial 2 of 5

Industrial 2 of 5 can encode digits from 0 to 9.{{cite web |url=http://www.n-barcode.com/en/shurui/ind-25.html |title=Industrial 2 of 5 |website=www.n-barcode.com}} The digit can be encoded in 5 black bars on digit and white spaces are ignored. Any black bar can have two width: wide or narrow. Any white space can have any width by not more than narrow black bar.

Industrial 2 of 5 start/stop patterns and data patterns are split by white space. Industrial 2 of 5 could include optional checksum character which is added to the end of the barcode.

Industrial 2 of 5 features:

• character set is a number (0-9);
• encoding density low: barcode length on 50% longer than Interleaved 2 of 5 symbology and on 172% than Code 128;
• variable length of symbol;
• can include optional checking character.

Four bars in encoding scheme, except zero, have own weights which encode value of the symbol. Also, last black bar is used as parity bit to avoid single error. Symbol consists of five bars: two wide bars and three narrow bars. Value of the symbol is a sum of nonzero weights of first four bars.

As an example, we can see digit 3 is encoded. Weight 1 and 2 is not zero and parity bits is 0 means the count of bits is divisible on 2. The result: 1*1 + 1*2 + 0*4 + 0*7 = 3.

The same with digit 4: weight 4 is not zero and parity bit is 1, which means that count of bits is not divisible on 2. 0*1 + 0*2 + 1*4 + 0*7 = 4.

N - narrow black bar.

W - wide black bar.

S - white space between bars, in most cases must be same size as narrow black bar.

The barcode has the following physical structure:{{cite web |url=https://barcodeguide.seagullscientific.com/Content/Symbologies/Industrial_2_of_5.htm |title=Barcode Guide: Industrial 2 of 5 |website=barcodeguide.seagullscientific.com}}

1. Quiet zone 10X wide

2. Start character

3. Variable length digit characters, properly encoded

4. Optional check digit

5. Stop character

6. Quiet zone 10X wide

Industrial 2 of 5 may include an optional check digit,{{cite web |url=https://barcode-coder.com/en/standard-2-of-5-specification-103.html |title=Barcode-Coder: Standard 2 of 5 |website=barcode-coder.com}} which is calculated as other UPC checksums. This is not required as part of the specification, but check digit is added as last digit in the code to improve the accuracy of the symbology.

$x\_\{check\}\; =\; 10\; -\; ((3x\_1\; +\; x\_2\; +\; 3x\_3\; +\; x\_4\; +\backslash cdots+\; x\_\{2n\}\; +\; 3x\_\{2n+1\})\backslash pmod\{10\})$,

where $x\_1$ is the most right data digit.

Example for the first 6 digits 423456:

Result: 4234562 barcode

File:IATA2of5.svg

IATA 2 of 5{{cite web |url=http://www.n-barcode.com/en/shurui/iata-25.html |title=IATA 2 of 5 |website=www.n-barcode.com}}{{cite book |url=https://books.google.com/books?id=jYwBBQAAQBAJ&pg=PA192 |title=Building IBM Enterprise Content Management Solutions From End to End |publisher=IBM Redbooks |page=192 |date=2014 |isbn=978-0738439969 }} (also known as Computer Identics 2 of 5,{{cite web |url=https://github.com/bwipp/postscriptbarcode/wiki/IATA-2-of-5 |title=IATA 2 of 5 |website=Barcode Writer in Pure PostScript}} Airline 2 of 5{{cite web |url=https://help.accusoft.com/BarcodeXpress/v9.0/dotnet/IATA%202%20of%205.html |title=IATA 2 of 5 |website=accusoft.com}}{{cite book |url=https://books.google.com/books?id=x7XeAAAAMAAJ |title=AIIM Buying Guide and Membership Directory: The Information Management Sourcebook |publisher=Association for Information and Image Management |page=312 |date=1994 }}) is a variable length, discrete, two width symbology, which is fully similar to Industrial 2 of 5 symbology except start/stop symbols. In this way it has all advantages and issues of Industrial 2 of 5 symbology.

N - narrow black bar.

W - wide black bar.

S - white space between bars, in most cases must be same size as narrow black bar.

IATA 2 of 5 was invented in 1974 by Computer Identics Corp.{{cite web |first=Stanley F |last=Zamkow |url=https://patents.google.com/patent/US3882464A |title=United States Patent US3882464A by Computer Identics Corp "Size ratio label reading system" |website=patents.google.com |publisher=United States Patent and Trademark Office |date=4 April 1974}} The barcode was used by International Air Transport Association (IATA) for managing air cargo.{{cite web |url=https://www.scandit.com/products/barcode-scanning/symbologies/iata-2-of-5/ |title=IATA 2 of 5 Scandit |website=www.scandit.com}}

IATA 2 of 5 version used by International Air Transport Association had fixed 17 digits length with 16 valuable package identification digit and 17-th check digit. Some readers currently still support this symbology{{cite web |url=https://www.inateck.com/media/productattach/b/c/bcst-33_v2_181114_en.pdf#page=47 |title=BCST-33 Barcode Scanner |website=www.inateck.com}}

• Automated identification and data capture (AIDC)
• Barcode
• Code 2 of 5
• International Air Transport Association
• Inventory control system

{{reflist|32em}}

• [https://products.aspose.app/barcode/generate/standard2of5 Free Industrial 2 of 5 and IATA 2 of 5 generator]
• [https://web.archive.org/web/20200607194919/http://www.barcodeisland.com/2of5.phtml Industrial 2 of 5 description]
• [https://patents.google.com/patent/US3701097A Industrial 2 of 5 Patent]
• [http://www.n-barcode.com/en/shurui/iata-25.html IATA 2 of 5 description]
• [https://patents.google.com/patent/US3882464A IATA 2 of 5 Patent]

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Category:Automatic identification and data capture

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