The GS1 Digital Link is the standard that connects a physical product to its Digital Product Passport. It is the doorway — the QR or Data Matrix on the product that resolves to the passport.
A GS1 Digital Link encodes the product identifier — typically a GTIN — as a web URL, for example /01/{gtin}, with an optional serial (/21/{serial}) for per-unit passports. Encoded in a QR or GS1 Data Matrix on the product, scanning it resolves to the passport. The same link works for a consumer's phone, a recycler's scanner and a customs system.
The link can be carried in a standard QR code, a compact GS1 Data Matrix (ISO/IEC 16022 ECC 200) for small labels, or an NFC/RFID payload for tap-to-verify and logistics. The carrier must print correctly at label size and always resolve to a reachable host — a QR that points at a dead URL is a recall risk, not a passport.
Because the passport is served through a resolver, the same GS1 Digital Link returns different views to different audiences: the public view for consumers, the professional view for repairers and recyclers, and the authority view for market surveillance. PassPer generates real GS1 Digital Link carriers and validates reachability before you print.
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