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Tutorials
DPP QR Codes: Sizing, Error Correction & GS1 (a developer's guide)
The QR code on a Digital Product Passport is not just any QR — it carries a GS1 Digital Link, has to survive printing on a product, and must resolve to the passport. The engineering details most guides skip, with print-ready generation code.
dpp qr-code gs1-digital-link error-correction labeling
