Tutorials
18 posts
DPP Registry: Setting Up Verified Economic Operators and Access Roles
The DPP Registry Regulation makes identity and authority prerequisites for reliable registrations. A practical guide to roles, mandates and audit trails.
GS1 Resolver Test Suite: Reliably Test DPP Links Before Go-Live
The stable GS1 test suite makes Resolver 1.2 testable. Verify redirects, linksets, CORS, languages, and error handling before go-live.
EUDR grouped statements: How reference numbers move through product and batch data
New EUDR grouping replaces individual references for supply-chain and customs use. Model batches, grouped references, API status and lineage correctly.
Repair data from 31 July: Preparing the product passport for the repair path
The EU repair Directive applies from 31 July 2026. Learn how to structure product, spare-part and process data for reliable repair operations.
Digital Battery Passport: How to Keep Your Data Up to Date
Mandatory from February 2027: how manufacturers update dynamic data in the Digital Battery Passport compliantly — from SoH to CO₂ footprint.
Keeping DPP Data Current: What the ESPR Actually Requires
How often must DPP data be updated? What the ESPR regulation concretely demands, where real-world implementation gets tricky, and which technical patterns hold up in practice.
Keeping DPP Data Current: What ESPR Actually Requires
How to correctly update Digital Product Passport data under ESPR: lot vs. item level, registry obligations, and practical architecture guidance.
Automating Digital Product Passports with Webhooks
A Digital Product Passport is not a static page — every scan is an event you can build on. React to qr.scanned for analytics, re-orders and recall flags, keep passport data fresh from your ERP, and verify every payload with HMAC-SHA256. A developer-grade guide with code.
Free DPP Solutions, Honestly Compared (open-source vs SaaS)
Searching for a free Digital Product Passport solution? Open-source frameworks and EU pilot projects exist and the license can be zero, but the real cost is engineering and operations. An honest guide to open-source, pilots and hosted options, including where qr3 fits and where it does not.
JSON-LD for Digital Product Passports (and where EPCIS 2.0 fits)
A DPP is only useful to machines if it is machine-readable. This guide shows the real JSON-LD a qr3 passport exposes via the live resolver, how one URL serves both humans and machines through content negotiation, and where the complementary EPCIS 2.0 event standard fits.
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.
Build vs Buy a Digital Product Passport System (the honest answer)
You need EU Digital Product Passports before a regulatory deadline — build in-house or buy? An honest breakdown of cost, time and compliance, plus the third option most build-vs-buy posts conveniently skip.
Real Digital Product Passport Examples (live & scannable)
Most 'DPP example' articles show a mock-up of a product that does not exist. Here are two real Digital Product Passports — a battery and a textile — that you can open, scan and request as JSON-LD right now.
The GS1 Digital Link Resolver, Explained (with a live example)
A DPP QR code is not a link to a web page — it is a GS1 Digital Link, and the resolver turns one identifier into many context-aware responses. Here is how it works, with a live passport you can curl right now.
Generate EU Digital Product Passports via API
Most DPP guides tell you what a passport must contain. This one shows how to create EU-compliant Digital Product Passports programmatically — with curl, the qr3 SDK, batch creation, validation, GS1 QR codes and webhooks.
Keeping DPP Registry Entries Up to Date: What the Implementing Regulation Requires
How manufacturers correctly update EU Digital Product Passport registry entries — obligations, timelines, and technical requirements under the implementing regulation.
Keeping DPP Data Current: How the Update Process Works
What the ESPR regulation actually requires for updating Digital Product Passports — and how to correctly maintain registry entries, resolvers, and product data.
QR Codes for Developers: REST API, SDK and CLI
How to programmatically generate QR codes, integrate them into your app, and react to scans via webhooks — a technical deep-dive.