Aztec Code Rune

Overview

Aztec Rune corresponds to a small but distinct machine-readable mark designed on the basis of the Aztec Code specification. Such barcodes contain only the core symbol of a full-range Aztec Code label with an 8-bit mode message protected by error correction. This barcode type includes 256 tiny square marks having the size of 11x11 modules. Aztec Rune barcodes can be detected and decoded by Aztec Code scanners.
Aztec Rune is defined in Annex A of standard ISO/IEC 24778.

Usage Scenarios

It is intended for specific applications in which the input message can be limited to 3 digits, e.g. object tracking in Augmented Reality systems and marking of very small items.

Characteristics

Encoding Character Set

Aztec Rune allows encoding only numerical digits from 0 to 255.

Barcode Structure

Each Aztec Rune includes a bulls-eye finder pattern, orientation patterns, and the input message with Reed-Solomon data. The finder and orientation patterns in an Aztec Rune are exactly as defined in the Aztec Code specification. As Aztec Runes are scanned from the center, no quiet zone is needed.

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  • Finder pattern: a square bull’s-eye symbol in the center that comprises 4 black and white square rings and the center black square.
  • Orientation patterns: the layer surrounding the finder pattern that includes chevron-shaped orientation patterns in all corners composed of three one-module squares.
  • Data message: the rest of a barcode contains one data layer with the input message and Reed-Solomon data. This layer is scanned and decoded in a clockwise direction.

Size Dimensions

Aztec Rune barcodes have amaximum size of 11 x 11 modules and are very tiny.

Encoding Capacity and Data Density

Aztec Rune can encode up to 3 numerical digits or 1 byte.

Error Correction

See the article Aztec Barcode Family for information about the error correction mechanism.

Advantages and Limitations

Aztec Rune allows creating very compact matrix barcodes that still provide damage resistance and data recovery owing to the error correction mechanism.

How to Generate and Read Aztec Rune Barcodes

Generation Code Samples

Recognition Code Samples