ISO/IEC 24778
ISO/IEC 24778 - Information technology - Automatic identification and data capture techniques - Aztec Code bar code symbology specification
Overview
Defines the Aztec Code: a 2D matrix symbology with a central bullseye finder and concentric layers of data spiralling outward. Sizes range from compact 15×15 (rune format) to 151×151. Reed-Solomon error correction over GF(16) for compact, GF(256) for full-range.
Why it matters for RFID
Aztec is used worldwide for transport ticketing (Deutsche Bahn, Eurostar, mobile boarding passes) because it scans without a quiet zone - useful when ticket layouts are tight.