GM2D Global QR Code Migration Technical Guide
A detailed guide to the GS1 Digital Link standard, the migration path from 1D barcodes to QR codes, encoding rule conversion, data capacity comparison, and enterprise technology upgrade implementation steps.
GS1's Global Migration to 2D (GM2D) initiative requires all global retail POS systems to fully support QR code scanning by the end of 2027. This means all enterprises using product barcodes need to complete the technology upgrade from 1D barcodes to 2D codes within the next two years. This article provides a complete migration guide for technical teams.
GS1 Digital Link is the core standard of GM2D. Unlike traditional 1D barcodes that only carry a GTIN, Digital Link format QR codes can carry GTIN, batch number, serial number, expiry date, web URL, and other multi-dimensional information in a single code. The URI format is: https://id.gs1.org/01/{GTIN}/10/{BATCH}/21/{SERIAL}. It supports all GS1 Application Identifier (AI) standard identifiers.
Technical implementation requires transformation at three layers: Coding — upgrade coding equipment and templates to support QR code/DataMatrix generation. Database — expand code table fields to support Digital Link syntax parsing and storage. Query service — support hybrid queries of both 1D barcodes and QR codes for smooth transition. ZhiShuYun's platform has completed full GS1 Digital Link support; customers can achieve GM2D compliance without additional development.
Migration strategy is recommended in three phases: Phase 1 (H1 2026): Complete dual-code parallel running of QR codes alongside 1D barcodes, verify full-chain compatibility. Phase 2 (H2 2026): Gradually expand QR code usage ratio, collect consumer scanning feedback. Phase 3 (H1 2027): Fully switch to QR codes, with 1D barcodes retained only as compatibility identifiers. ZhiShuYun can provide customers with full-process technical support from coding scheme design to production line transformation.