# Product Identity: Where Do I Start, and What Does It Unlock? Source: https://activatedigital.ai/knowledge/product-identity Last verified: 16 September 2026 Summary: One product. One stable identity. Many useful jobs. See how to identify a product, govern its facts, connect systems and reuse the result in a Digital Product Passport. ## Direct answer **Product identity is the stable reference that lets different systems, organisations and services agree which product they are talking about.** Your product data does not need to live in one giant database. Shopify, a PIM, ERP, spreadsheets, evidence folders and technical files can continue doing the jobs they do well. The important change is that the same product remains identifiable across them. That creates a practical progression: **identify the product → govern the facts → connect the systems → resolve the identity → reuse the data → publish the passport → keep the identity useful after sale** Product identity is not valuable because a code exists. It becomes valuable when reliable systems can use that identity to find, exchange, correct or act on the right product information. ## Start with the question you need to answer ### What identifier does my product actually need? GTIN, SKU, model, batch and serial identifiers do different jobs. Begin with the object you need to identify and the external system that needs to recognise it. [Your first product identifier](https://activatedigital.ai/knowledge/guides/first-product-identifier-small-business) ### Where should my product data live? A PIM is one way to govern product information. It is not the outcome. The outcome is stable identity, governed facts, evidence, change control and reuse. [Organise product data without a PIM](https://activatedigital.ai/knowledge/product-data/small-business-without-pim) ### How do I connect the same product across systems? A Shopify SKU, ERP ID, retailer article number and GTIN can all be valid without being the same identifier. A governed crosswalk records that they refer to the same scoped product. [Map product IDs across systems](https://activatedigital.ai/knowledge/guides/product-id-mapping-gtin-sku-erp-pim-dpp) ### What does GS1 Digital Link add? Where GS1 identity is the right choice, Digital Link can make that product identity addressable on the web and discoverable by more than one relevant resource or service. It is an architecture choice, not a universal DPP mandate. [GS1 Digital Link](https://activatedigital.ai/knowledge/fields/gs1-digital-link) ### What can connected product identity unlock? The same identity can support product feeds, marketplace continuity, AI-mediated commerce, measurement, recalls, repair and other services when the surrounding data and workflows are governed properly. [Connected product identity](https://activatedigital.ai/knowledge/guides/product-identity-external-data-context) ### How does this become a Digital Product Passport? A passport should be a governed projection of product data and evidence, plus genuinely new information required by the applicable product rule. It should not become a second product master that slowly diverges from the systems running the business. [The product data you already have](https://activatedigital.ai/knowledge/guides/the-data-you-already-have) ### What happens after the first sale? A persistent identity can remain useful through repair, warranty, returns, resale, recall and lifecycle updates. The identity gives those workflows a reliable subject; it does not by itself prove ownership, entitlement, authenticity or condition. [Product identity after the sale](https://activatedigital.ai/knowledge/guides/product-code-after-sale-services) ## Keep the layers separate - A GTIN is not a PIM. - A QR Code is not GS1 Digital Link. - GS1 Digital Link is not the product database. - A Digital Product Passport is not automatically the product master. - Product identity does not by itself prove authenticity, ownership or compliance. The useful system is the governed connection between the layers. ## Apply the model to one product Choose one sellable product and record: - what object and level you are identifying; - its internal and external identifiers; - which systems hold those identifiers; - which system owns each important fact; - what evidence supports those facts; - which services need to find the same product; - what changes after publication or sale. That small test exposes identity gaps before they become a catalogue, integration or passport problem. ## Keep exploring The questions this page usually raises next. - [Another angleNext questionBarcodes and Product Identifiers: What You NeedWhat a barcode or product identifier has to do before a passport can hang off it, how to start if nothing has been allocated to…→](https://activatedigital.ai/knowledge/fields/identifiers) - [Another angleNext question2D Product Identity Map: QR Code vs GS1 DataMatrix vs GS1 Digital LinkCompare QR Code, GS1 DataMatrix and Data Matrix with GS1 Digital Link for a Digital Product Passport.→](https://activatedigital.ai/knowledge/passport/2d-product-identity-map) ## Sources and evidence boundary - [GS1 Digital Link Standard: URI Syntax 1.7.0](https://ref.gs1.org/standards/digital-link/uri-syntax/1.7.0/) Standards body - [Regulation (EU) 2024/1781, Ecodesign for Sustainable Products Regulation](https://eur-lex.europa.eu/eli/reg/2024/1781/oj/eng) EU law The journey distinguishes standards, commercial requirements and law. GS1 Digital Link is not presented as a universal DPP requirement, and the value of product identity is not attributed to an identifier acting alone.