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Dominika Cepek
Dominika Cepek

Digital Identity Glossary | All terms in one table

Last updated: 4 September 2026

Every term from every Authologic glossary, in one place.

Authologic's glossaries define 22 terms across 4 pages: the roles in the EUDI Wallet ecosystem, the supply side behind them, what a wallet actually holds, and the infrastructure vocabulary of multi-method verification.

This index lists all of them with the layer each belongs to and the question it answers, so you can find a term without knowing which glossary it lives in.

Digital Identity Glossary title card: all terms in one table

How to use this page

  • Terms are listed alphabetically. The layer column says where a term sits in the ecosystem; the glossary column links to its full definition with practical and legal detail.
  • Six layers organise the whole vocabulary: supply side, wallet, contents, demand side, infrastructure, regulation. Every term belongs to exactly one.
  • One term appears in two glossaries by design. PID is defined as a role in part 1 and as a dataset in part 3.

All terms

Term

Layer

Glossary

Question it answers

Article 5f sectoral catalog

regulation

Part 2

Which sectors must accept the wallet, and from when

Combined presentation

contents

Part 3

How attributes from several credentials are requested at once

Dynamic routing

infrastructure

Identity Orchestration

How a verification method is chosen for each user

EAA (electronic attestation of attributes)

contents

Part 3

What a signed statement about a person is, and what it is not

eID-native architecture

infrastructure

Identity Orchestration

Which family of methods sits at the centre of a stack

EUDI Wallet

wallet

Part 1

What the wallet itself is, and who must provide one

Holder

wallet

Part 2

Who keeps the credentials and decides who sees them

Identity fallback

infrastructure

Identity Orchestration

What happens when a verification method fails

Identity orchestration

infrastructure

Identity Orchestration

What connects many verification methods into one flow

Issuer

supply side

Part 2

Who creates a credential and signs it

Method coverage

infrastructure

Identity Orchestration

How far a platform actually reaches, and how to check it

Orchestration layer

infrastructure

Identity Orchestration

Where in the architecture the routing logic sits

PID (person identification data)

wallet

Part 1 and Part 3

What the core identity credential is, and what it contains

PuB-EAA (public body attestation)

contents

Part 3

What an attestation from a public register is worth

QEAA (qualified attestation)

contents

Part 3

What the qualified tier of attestation carries

Qualified and non-qualified trust services

supply side

Part 2

What changes when a provider holds qualified status

Relying party

demand side

Part 1

Who reads data from a wallet, and what that triggers

Relying party intermediary

demand side

Part 1

Who operates the connection to wallets for others

Selective disclosure

contents

Part 3

How one attribute is shared without revealing the rest

Trust service provider

supply side

Part 2

Who supplies signatures, seals, timestamps and attestations

Verifier

demand side

Part 1

Which infrastructure checks that a credential is genuine

Wallet provider

supply side

Part 2

Who builds and operates the wallet app

What each glossary covers

EUDI Wallet & eIDAS 2.0 Glossary, part 1: who does what in the ecosystem - the demand side. The wallet, PID as a role, relying parties, intermediaries and verifiers: who reads data from a wallet and what infrastructure that takes.

Part 2: who issues, who provides, who guarantees - the supply side. Issuers, holders, wallet providers, trust service providers and the two tiers of trust service, plus the Article 5f catalog of sectors that must accept the wallet.

Part 3: what is inside the wallet - the contents. What PID actually contains, the three attestation types and what separates them, and the two mechanisms that shape what leaves the wallet: selective disclosure and combined presentation.

Identity Orchestration Glossary - the infrastructure underneath. Orchestration, the orchestration layer, dynamic routing, fallback, method coverage and eID-native architecture. Not part of the EUDI series: this vocabulary applies wherever more than one verification method is in play.

How the EUDI Wallet glossary series fits together: supply side, wallet contents, demand side, and the orchestration vocabulary underneath

How the layers fit together

A credential is created on the supply side by an issuer, under guarantees provided by a trust service. It lands in the wallet, where a holder keeps it. Its contents determine what can be proved and how much of it leaves the wallet in any single request. On the demand side, a relying party asks for attributes and verifier infrastructure checks them, either built in-house or operated by an intermediary. Underneath all of it sits the infrastructure layer, which decides which method a given user is routed to and what happens when that method fails. Regulation cuts across the whole picture and determines who has no choice but to take part.

The layers are not a hierarchy. They are a way of asking where a term belongs, which is the fastest route to understanding what it does.

What is not defined here yet

Two terms appear across these glossaries without a definition of their own: assurance levels, meaning the low, substantial and high tiers eIDAS defines for electronic identification, and qualified electronic signature (QES). Both are the subject of part 4.

Part 5 will cover the trust framework in practice: certification, trusted lists, conformity assessment and cross-border recognition. Further glossaries will extend this index beyond the EUDI ecosystem, starting with AML and KYC.

To test your own position against the vocabulary, see the EUDI Wallet Readiness Checklist and Are you ready for July 2027? A 32-question SCA & AMLR readiness checklist.


Changelog

  • 4 September 2026 - Initial publication (22 terms across four glossaries).

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