The Physical-to-Digital Bridge
A Digital Product Passport is useless if you cannot link the physical product to its data. The ESPR requires a physical data carrier affixed to the product, packaging, or documentation.
The Challenge with Cables
Cables present unique challenges. They are often long, thin, installed in harsh environments, cut to length, or buried underground. Standard adhesive labels degrade.
IEC 61406 Standard
The industry is converging on the IEC 61406 standard (formerly DIN SPEC 91406). This standard defines how to structure a unique identifier (usually via a URI/URL) encoded in a 2D barcode (like a QR code or Data Matrix) or an RFID tag.
Common Mistake: Dead Links
Do not print a standard URL pointing to a marketing page on your website. If you redesign your site in 5 years, the link breaks, rendering the product non-compliant. Use a robust resolver service designed for longevity.
Data Carrier Options
| Carrier | Pros | Cons |
|---|---|---|
| QR Code / Data Matrix | Cheap, universally readable via smartphone. | Requires flat surface, prone to physical damage. |
| Laser Etching | Permanent, extremely durable. | Slow manufacturing process, lower contrast. |
| RFID / NFC Tag | No line of sight needed, durable. | Higher cost, requires specific readers or close proximity. |