A machine-readable access layer connecting a physical product to the digital record or passport information behind it.
Data carrier is easy to overvalue and undervalue: it is essential to real-world access, but it is still only the access mechanism. It may be a barcode, two-dimensional symbol, RFID tag, or other AIDC medium, but it is not the passport, the unique identifier, or proof that the underlying data is complete.
A data carrier is the machine-readable access layer, such as a QR code, barcode, RFID tag, or other AIDC medium, that lets a device reach product or passport information. It is the doorway to the data, not the identifier, not the passport, and not the underlying product data itself.
A data carrier is the scannable or readable medium attached to or associated with a product, packaging, label, or accompanying document. It may encode or transmit a URL, identifier, or lookup reference, but its job is access: connecting the physical object to the correct digital record without becoming that record itself.
The common mistake is to treat the visible QR code, barcode, tag, or chip as the digital product passport or battery passport. The carrier is only the access layer. The passport is the regulated data set or structured record behind it, and the unique identifier is the identity value used to distinguish the product model, batch, item, or battery. The carrier is also not the whole user experience: software, permissions, data quality, link resolution, access rules, and rendering determine what a user can actually see after scanning.
ESPR and the CRMA use technology-neutral wording: a data carrier can be a linear barcode, two-dimensional symbol, or another automatic identification data capture medium readable by a device. Battery-passport rules add placement and durability expectations: the QR code must be printed or engraved visibly, legibly, and indelibly on the battery where possible, or otherwise placed on packaging and accompanying documents.
Implementation teams need to connect data engineering with physical marking, printing, labelling, and manufacturing. A carrier strategy should cover scanability, durability, placement, print or engraving method, link persistence, redirects, offline or fallback routes, replacement procedures, tamper or cloning risk, and migration planning. A well-structured passport can still fail operationally if the carrier no longer resolves to the correct record.
Regulation (EU) 2024/1781 establishing a framework for the setting of ecodesign requirements for sustainable products
a linear barcode symbol, a two-dimensional symbol or other automatic identification data capture medium that can be read by a device;
Reference: Article 2, point 29
Regulation (EU) 2024/1252 establishing a framework for ensuring a secure and sustainable supply of critical raw materials
a linear bar code symbol, a two-dimensional symbol or other automatic identification data capture medium that can be read by a device
CRMA Article 2 source-specific definition layer.
Reference: Article 2, point 54
Reviewed public draft page. Aligns with identity/access policy: separates identity, carrier, QR/access mechanism, passport record, item granularity, and service-platform infrastructure.
Implementation records should capture carrier type, placement record, resolution target, linked identifier, passport or product-data endpoint, durability requirement, access context, redirect rule, replacement procedure, clone-risk handling, and fallback path if the carrier is damaged or no longer resolves.
Data carrier is the physical-to-digital access layer. It proves very little by itself, but it determines whether a user, recycler, auditor, or authority can reliably reach the correct passport record and evidence for the object in front of them.
Minespider’s product-passports overview explains how DPP access points, identifiers, permissions, and supply-chain data fit together in implementation.
Read on MinespiderBattery-sector context for passport data, battery identity, access mechanisms, and the evidence layer behind battery-passport implementation.
Read on MinespiderLegal definition of data carrier as a linear barcode symbol, two-dimensional symbol, or other automatic identification data capture medium readable by a device.
Open referenceBattery-sector deployment context for visible, legible, indelible QR-code access to battery information and the battery passport.
Open referenceImplementation context for barcode and data-carrier technologies used to identify products and connect physical items to digital information.
Open reference