Version 5.2

• Added GS1 Barcodes reader and writer: GS1-DataMatrix, GS1-128, GS1 DataBar.
• Added ISO/IEC 15415 barcode print quality test for DataMatrix, Aztec and QR barcodes.
• Created BarcodeWriterControl.
• Created new demos: Simple Barcode Writer and Simple Barcode Reader.
• Improved QR Code barcode reader algorithm.
• Created new SDK documentation.

Version 5.1

• Version of assembly compiled under .NET 4.0 is available.
• Memory usage is optimized.
• Improved multi-threading support.
• Fixed some bugs in barcode reading and writing algorithms.
• Examples for Visual Studio 2010 have been created.
• Examples for Visual Studio 2005/2008 have been updated.

Version 5.0

• Now SDK allows to read and write Aztec 2D barcode:
  
  
  • Symbols: Full range, Compact, Rune.
  • Text/Byte modes.
  • Reed-Solomon error correction.
• Improved multi-threading support.
• Added opportunity to write barcode in vector form (to GraphicsPath) (see sample).
• Added user-defined barcode verification method (ReaderSettings.VerifyBarcodeMethod) (see sample).
• Added opportunity to write barcode with specified size and resolution (see sample).
• Improved PDF files reader engine: reading from non-encrypted PDF files version 1.0-1.7 supported.
• Generated PDF417 barcodes are fully compatible for reading with handheld barcode scanners now.
• QR Code barcode reading speed has been increased.
• Fixed some bugs in barcode reading algorithm.

Version 4.3

• Optimized the reading algorithm of Code 128 and Code 39 barcodes.
• Improved the loading algorithm of CCITT images from PDF documents.
• Barcode reading speed has been increased.
• Fixed some bugs in barcode reading algorithm.

Version 4.2

• Optimized the memory management.
• Optimized the reading algorithm of PDF barcodes.
• Improved the loading algorithm of images from PDF documents.
• Examples have been optimized for work with big images.

Version 4.1

• Now library allows to read and write RSS (GS1 DataBar) bacodes:
  
  
  • RSS-14 (GS1 DataBar Omnidirectional)
  • RSS-14 Truncated (GS1 DataBar Truncated)
  • RSS-14 Stacked (GS1 DataBar Stacked)
  • RSS-14 Stacked Omnidirectional (GS1 DataBar Stacked Omnidirectional)
  • RSS Limited (GS1 DataBar Limited)
  • RSS Expanded (GS1 DataBar Expanded)
  • RSS Expanded Stacked (2-11rows) (GS1 DataBar Expanded Stacked)
• Added automatic barcode recognition mode (ReaderSettings.AutomaticRecognition property).
• Added ability to set the ratio of the wide bar width to the narrow bar width (WriterSettings.BarsRatio property).
• Added ability to set the adjustment method of bars width (WriterSettings.BarsWidthAdjustment property).
• Optimized algorithms: RGB to BW conversion, Threshold detection.
• Fixed some bugs in barcode reading algorithm.

Version 4.0

• Read barcodes from PDF documents (version 1.4)
• 2D Barcode writers:
  
  
  • Data Matrix, PDF417/PDF417 Compact, QR Code
  • Supports Text, Byte, Numeric, Kanji (QR Code) data encoding modes.
  • Optimize encoding text for receiving minimum matrix size.
  • Automatic or manual matrix size.
  • Data Matrix: supports all ECC200 square (10x10 to 144x144) and rectangular (8x18 to 16x48) symbols.
• 1D Barcode writers:
  
  
  • Linear Barcodes: Code 11, Code 39, Code 93, Code 128 (A,B,C), EAN-13, EAN-8, UPC-A, UPC-E, Interleaved 2 of 5, Standard 2 of 5, Codabar (A,B,C,D), PatchCode, Telepen.
  • Postal Barcodes: Intelligent Mail, Australian Post, Postnet, Planet, RoyalMail.
• Added ability to check what part of barcode scanning lines is usable for reading (ReadingQuality property).
• Reading algorithms of Code 128, Interleaved 2 of 5 have been optimized and improved.
• Fixed some bugs in barcode reading algorithm.

Version 3.2

• Library allows to read QR Code barcodes now.
• Library allows to read IntelligentMail barcodes now.
• Reading algorithms of Code 39, Code 128 and Postal barcodes have been optimized and improved.
• Anti-aliasing algorithm for Black/White images (BarcodeReader.ConvertBlackWhiteImageToGrayImage) has been added.
• Fixed some bugs in barcode reading algorithm.

Version 3.1

• Library allows to read DataMatrix (ECC200) barcodes now.
• Reading algorithms of Code 39 and Code 128 barcodes have been optimized and improved.
• Multi-threaded support has been added.
• New barcode scan directions (45 and 135 degrees) have been added.
• Barcode reading quality has been increased.
• Fixed some bugs in barcode reading algorithm.

Version 3.0

• Library allows to read PDF417 barcodes now.
• Barcode reading engine has been optimized.
• Barcode reading quality has been increased.
• Barcode reading speed has been increased more than 2 times.
• Fixed some bugs in barcode reading algorithm.
• Applications which use previous versions of library must be recompiled because architecture of library was changed.
• Examples have been updated.

Version 2.2

• Library allows to read patch codes now. Supported patch codes: 1, 2, 3, 4, 6, T.
• Ability to read "pea" barcodes has been added. "Pea" barcode - a barcode of black color which contains noise (many white dots in barcode's lines).
• Ability to set minimal distance between barcodes has been added. Library can recognize two barcodes with distance between barcodes up to 4 pixels.
• Documentation in Visual Studio .NET 2005 format has been created.
• Fixed some bugs in barcode reading algorithm.
• Examples have been updated.

Version 2.0

• Library allows to read Australian Post barcodes now.
• Speed and quality of barcodes reading have been increased.
• Optional checksum calculation for Code 11, Industrial Standard 2 of 5, Interleaved 2 of 5 barcodes types has been added.
• Ability to read barcodes from inverted images has been added.
• Examples have been updated.

Version 1.3

• Library allows to read postal barcodes (Planet, Postnet and Royal Mail) now.

Version 1.2.2

• Bug in work with scan rectangle has been fixed.

Version 1.2

• Barcodes reading speed increased.

Version 1.1

• Barcodes reading speed increased.

Version 1.0

• Recognizes all barcodes in an image.
• Identifies recognized barcode type.
• Returns the string value of barcode.
• Automatically detects the orientation of barcode.
• Returns the bounding rectangle of barcode.
• Supported barcode types: Code 11, Code 39, Code 93, Code 128, Codabar, EAN-8, EAN-13, Interleaved 2 of 5, Industrial standard 2 of 5, UPC-A, UPC-E, Telepen, Plus 2, Plus 5.