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2. Object hyperlinking - Wikipedia

   en.wikipedia.org/wiki/Object_hyperlinking

   It is one of several methods of object hyperlinking including graphical tags (2D barcodes), SMS tags and RFID tags. The hardlink method establishes a reference link between a physical world object and a .mobi web page just as a traditional hyperlink establishes an electronic reference to information on a Web page. A common cell phone is the ...

3. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Barcode scanners can be classified into three categories based on their connection to the computer. The older type is the RS-232 barcode scanner. This type requires special programming for transferring the input data to the application program.

4. Rectangular Micro QR Code - Wikipedia

   en.wikipedia.org/wiki/Rectangular_Micro_QR_Code

   Possible corner finder patterns [2]: 6.3.8 on top-right and bottom-left barcode corners. Main finder pattern is used to detect the barcode on image and its corruption can make barcode unrecognizable. Finder pattern has vertical and horizontal size 1-1-3-1-1. Finder sub pattern helps to detect bottom-right corner of the barcode.

5. 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 with embedded barcodes.

6. ZBar - Wikipedia

   en.wikipedia.org/wiki/ZBar

   ZBar is an open-source C barcode reading library with C++, Python, [2] Perl, and Ruby bindings. [3] [4] [5] It is also implemented on Linux and Microsoft Windows as a command-line application, [6] and as an iPhone application.

7. Code 39 - Wikipedia

   en.wikipedia.org/wiki/Code_39

   The barcode scheme does not contain a check digit (in contrast to—for instance—Code 128), but it can be considered self-checking on the grounds that a single erroneously interpreted bar cannot generate another valid character. Possibly the most serious drawback of Code 39 is its low data density: It requires more space to encode data in ...