- A remarkable feature of Aztec barcode is its search pattern ("bull eye") located in the center, this makes unnecessary the existence of quiet (free) zone around the barcode.
- The use of a special symbol (Structured Append character) allows to unite the value of up to 26 Aztec barcodes.
It's necessary to note that the Structured Append character exist in the majority of two-dimensional barcode types, but the quite zone outside their bounds is mandatory.