# rMQR code

> rMQR is a rectangular QR variant standardised in ISO/IEC 23941 (2022). It carries more data than Micro QR in a long, thin footprint, which suits cable labels, pipes, cylindrical parts and shelf edges.

Source: https://useqr.app/glossary/rmqr · Last reviewed 2026-08-21 · UseQR is free forever, MIT licensed, no signup.

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## Why rectangular

A square code wastes space on a narrow surface. rMQR ranges from 7 to 17 modules high and
27 to 139 modules wide, holding up to 361 alphanumeric characters or 219 bytes.

## Where it wins

Cable and wire labels, medical vials, pharmaceutical blister packs, shelf-edge tickets,
pipe marking — any surface with plenty of length and almost no height.

## Support

Newer than standard QR and much less widely implemented. Modern industrial imagers support
it; phone cameras largely do not. Treat it as an industrial format and confirm the reading
hardware before committing.