2d-matrix
QR Code (Quick Response) (QR Code)
Omnipresent 2D matrix barcode featuring three distinctive finder squares. Ubiquitous on consumer smartphones, web links, and contactless interfaces.
Governing Specification: ISO/IEC 18004:2015
Data Format & Required Fields
Four user-selectable error correction levels: L (7%), M (15%), Q (25%), H (30%). Can encode up to 7,089 numeric or 4,296 alphanumeric characters.
Allowed Character SetAlphanumeric, numeric, binary, and UTF-8 strings.
Payload Length Rule Between 1 and 2953 characters
Example Valid Format
https://visionscan.coefficiant.com/verify/sampleIndustry Guidance & Practical Applications
- Mobile web links and marketing landing pages
- Wi-Fi credentials, vCard contact information, and payment intent URLs
- Electronic patient leaflets (e-leaflets) and instructions for use (eIFU)
Packaging & Scanning Notes: Widely accessible across iOS and Android native camera applications without dedicated scanning apps.
Symbol Constraints & Label Guidelines
- Requires a minimum 4-module quiet zone on all four sides for reliable finder pattern isolation.