Aztec Code is type of 2D barcodes invented by Andrew Longacre, Jr. and Robert Hussey in 1995. Aztec barcodes are one of the small and most popular symbologies. Aztec bar codes uses square modules with unique finder pattern in the middle of the symbol.
This symbol helps to barcode reader to determine cell locations to decode the symbol, characters, numbers, text and bytes of data that encoded in an Aztec barcodes. Compared to other 2D barcode symbologies, Aztec barcodes are approximately 30 times smaller than Code 39 barcode to represent same data. Aztec barcodes are useful to create small item marking applications and uses wide variety of printing and marking technologies.
Aztec Code contains dark and light square data modules. It has finder pattern of concentric square rings centered on single dark module that located in the center of the symbol.
Two-dimensional image device like CCD camera is necessary that scan the Aztec symbology. Aztec Code can encode all 8-bit values (0-127 ASCII and 128-255 ISO 8859-1, Latin Alphabet No.1).
All conversion between bits strings and other forms is performed according to big-endian (most significant bit first) convention.