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Update the discovery #187

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Update the discovery #187

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@oej oej commented Jun 18, 2025

  • Add a note about avoiding guessing the TEI
  • Add a note about "shared EAN codes" - those are not useful for creating unique TEIs for products that share EAN code. Each product needs a unique TEI.

@oej oej requested a review from madpah as a code owner June 18, 2025 11:55
## The TEI URN: An extensible identifier

The TEI, Transparency Exchange Identifier, is a URN schema that is extensible based on existing
identifiers like EAN codes, PURL and other identifiers. It is based on a DNS name, which leads
to global uniqueness without new registries.

The TEI can be shown in the software itself, in shipping documentation, in web pages and app stores.
TEI is unique for a product, not a version of a software. The TEI consist of three core parts
TEI is unique for a product, not a version of a product.
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We also need to update the definition of Product in the beginning of this document as it does not cover physical (hardware) in my reading.

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Added text in f18cd38

@oej oej mentioned this pull request Jun 18, 2025

A TEI belongs to a single product. A product can have multiple TEIs - like one with a EAN/UPC
barcode and one with the vendor's product number.

### TEI syntax

The TEI consist of three core parts
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consist -> consists (spelling)

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Fixed in 963ebde

Signed-off-by: Olle E. Johansson <[email protected]>
@oej oej mentioned this pull request Jun 19, 2025
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