GS1 Digital Link
Definition
A GS1 standard that defines how identification keys are represented inside a web address, so that a scan produces a resolvable link whose structure a machine can interpret. A resolver then redirects the request to the destination appropriate for the requesting audience.
Expanded Explanation
A Digital Link address carries the key and its value in a defined path, for example a trade item number followed by a batch or serial value. Because the structure is standardised, any conforming system can extract the identifier from the address rather than guessing at a proprietary URL format.
The second part of the standard is resolution. Rather than the carrier pointing at one fixed page, a resolver holds a set of link types for each identifier, such as product information, instructions, safety data, certification or a passport endpoint. The requester’s context determines which destination is returned, and the set can be changed without reprinting anything.
For passports this matters because the audiences are different by design. A consumer, a repairer, a recycler and an authority may need different views of the same product, and the access rules that separate them cannot be expressed by a single printed URL.
Why It Matters
Digital Link separates identity from destination. Products already in the field keep working when systems are replaced, content is restructured or a passport endpoint moves, because only the resolver entry changes. Implementations that print destination URLs directly lose that flexibility permanently.
Common Misconceptions
It is a syntax and resolution standard, not a symbology. The same Digital Link address can be encoded in a QR code, a DataMatrix or an RFID tag.
Related Terms
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See Also
References
- GS1 Digital Link standard: https://www.gs1.org/standards/gs1-digital-link
- GS1 General Specifications: https://www.gs1.org/standards/barcodes-epcrfid-id-keys/gs1-general-specifications
- ISO/IEC 18004, QR code symbology specification: https://www.iso.org/standard/83389.html
About This Article
tieback Knowledge is a continuously maintained reference library covering Digital Product Passports, product traceability, product compliance and related regulations. Articles are reviewed regularly as legislation, standards and implementation guidance evolve.