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2. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Other paid and free apps are available with scanning capabilities for other symbologies or ... Free Online Barcode Generator This page was last edited on 25 ...

3. Barcode library - Wikipedia

   en.wikipedia.org/wiki/Barcode_library

   Barcode library or Barcode SDK is a software library that can be used to add barcode features to desktop, web, mobile or embedded applications. Barcode library presents sets of subroutines or objects which allow to create barcode images and put them on surfaces or recognize machine-encoded text / data from scanned or captured by camera images ...

4. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   There are a great many QR code generators available as software or as online tools that are either free or require a paid subscription. [12] The QR code has become one of the most-used types of two-dimensional code. [13] During June 2011, 14 million American mobile users scanned a QR code or a barcode.

5. Code 128 - Wikipedia

   en.wikipedia.org/wiki/Code_128

   Code 128 is a high-density linear barcode symbology defined in ISO/IEC 15417:2007. [1] It is used for alphanumeric or numeric-only barcodes. It can encode all 128 characters of ASCII and, by use of an extension symbol (FNC4), the Latin-1 characters defined in ISO/IEC 8859-1. [citation needed] It generally results in more compact barcodes compared to other methods like Code 39, especially when ...

6. Code 39 - Wikipedia

   en.wikipedia.org/wiki/Code_39

   Code 39 (also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3) is a variable length, discrete barcode symbology defined in ISO / IEC 16388:2007. The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %, and space). An additional character (denoted ...

7. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   Universal Product Code. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units ...