Identification
QR
Quick Response code
The square matrix barcode invented by Denso Wave in 1994 — by far the most-scanned 2D symbology on consumer products today.
A QR code is a 2D barcode that encodes data (typically a URL) in a grid of black-and-white modules, with four corner finder patterns and built-in error correction. 'QR' stands for Quick Response.
Every modern smartphone camera scans QR natively. That, combined with low-cost printing, is why QR became the default carrier for connected packaging, restaurant menus, payments and the GS1 Digital Link.
GS1 specifically standardises QR for retail under 'GS1 QR Code' and 'GS1 Digital Link in QR' — same symbology, regulated content rules.