What is Aztec Code?
The Aztec Code is a two-dimensional matrix barcode that stores data very compactly and - unlike QR - needs no quiet zone around it. It is the standard printed on airline boarding passes (the IATA BCBP format) and on many rail and metro tickets, because it packs a lot of information into a tiny symbol that survives creasing and partial damage, and it scans even when printed at small sizes or directly onto documents with no white border.
Common Uses for Aztec Code
- Airline boarding passes (IATA BCBP 2D barcode)
- Rail, ferry and event tickets
- Small package and document labels with limited space
- Transport and logistics where quiet zone is not available
Aztec Code vs QR Code
Both are square matrix 2D codes with error correction, but they target different jobs. Aztec encodes data in a compact bullseye-centred symbol with no quiet zone, sized for thermal ticket printers and passenger documents. QR is built for phone cameras and consumer scanning, typically carrying a URL. For printed travel documents and tickets, Aztec is the transport-industry standard.
Aztec on Boarding Passes (IATA BCBP)
Airlines print the boarding pass barcode in the IATA BCBP format, which Aztec encodes perfectly: a fixed record containing passenger name, flight number, date, seat and sequence. The code is printed small and must scan under harsh cabin lighting and after the pass is folded - Aztec's size and error correction make both possible.
Aztec Data Capacity
A single Aztec symbol holds up to about 3,000 characters with error correction, depending on size. For small labels the code can be a fraction of a square inch yet still store a full boarding pass record, which is why it is the workhorse of printed transport tickets worldwide.
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