Aztec Barcode is a 2D barcode which can encode 8 bit data, including all ASCII characters (binary values 0 - 127) and the remaining values (binary values 128 - 255). The barcode also includes error detection and correction to compensate for damaged barcodes. Error correction typically takes up 23% of the code space.

The Aztec barcode has three different code sizes:

• Full - Full code size.
• Compact - Compact code size.
• Rune - A special barcode which can only encode values 000 - 255.

	Full	Compact	Rune
Number of Symbols	40	4	256
Size	19x19 – 151x151 modules	15x15 – 27x27 modules	11x11 modules
Text Capacity (characters)	15 – 3067	12 – 89	0
Numeric Capacity (Digits)	18 - 3832	13 - 110	3
Binary Capacity (8 Bit values)	8 - 1914	6 – 53	0