Aztec Code is a high density 2 dimensional matrix style bar code symbology that can encode up to 3832 numeric or 3067 alphabetic characters or 1914 bytes of data. The symbol is built on a square grid with a bulls-eye pattern at its center. Data is encoded in a series of "layers" that circle around the bullseye pattern. Each additional layer completely surrounds the previous layer thus causing the symbol to grow in size as more data is encoded yet the symbol remains square. Aztec's primary features include: a wide range of sizes allowing both small and large messages to be encoded, orientation independent scanning and a user selectable error correction mechanism.
An Aztec code barcode is used by Eurostar, Deutsche Bahn, Trenitalia, Nederlandse Spoorwegen, Przewozy Regionalne, PKP Intercity, Swiss Federal Railways, SNCF and its subsidiary iDTGV for tickets sold online and printed out by customers. An Aztec code barcode is used by Heathrow Express and East Coast delivered to mobile phones and displayed on their screens, and on self print tickets. The barcode is scanned by a handheld scanner by on-train staff to validate the ticket.
Features
 Create Aztec symbols from alpha/numerical text
Output barcode image with the formats such as BMP, GIF, JPEG, PNG Render barcode images on any devices, and create device resolution dependent images
Full controls of the bar code image styles, such as background color, bar color, image quality, rotation angle, x-dimension, captions, etc.
Use selectable error correction, from 5% to 95% of data region
Support structured Append mode.
Support Tilde mode Support 19 error correction levels
Support 36 different symbol size
Program is easy,several lines of code can get barcode image generated.