DefinitionIn forcev1.0.0

Subject

For the purpose of real-world testing, a subject is a natural person who participates in such a test. The term comes from the testing regime, not from data protection law.

The official source remains authoritative. This is general information about obligations and not legal advice. See this object on the map

Address and citation

This object has an address of its own that is never renamed or reused. Store the identifier in your own file, not the title or the link.

Identifier: praxikon:eu:ai-act:definition:definitie-proefpersoon
Payload hash (sha256): 2a16ab809e3d8274195aecfa9c536f70c3b6014bd6eb681db9591735bdf484a0

Citation line

Praxikon, "Subject", praxikon:eu:ai-act:definition:definitie-proefpersoon@1.0.0, dataset praxikon:sys:registry:dataset:ai-act-implementation-graph 2.1.0 (schema 1.4.0), effective_at 2026-08-08T00:00:00.000Z, known_at 2026-08-14T00:00:00.000Z, sha256 2a16ab809e3d8274195aecfa9c536f70c3b6014bd6eb681db9591735bdf484a0

Version: 1.0.0
Legal time (effective_at): 8 August 2026
Knowledge time (known_at): 8 August 2026
Closed on: Not closed
Application date: 1 August 2024
Topics: definitions

Review status: Placed against the official source (8 August 2026). Next check due by 4 February 2027. The check date is the knowledge date of this version; no later recheck has been recorded.

What this object links to

Every relation appears below as a path: from the source with its locator, through the conditions and exceptions of the object carrying the relation, to the consequence. A locator belongs to a statement in the data and not to a relation, so the source is the source anchor of the carrying object.

What this object is about

1 of 1 shown

The object is about this role. Undifferentiated: it does not follow that the duty rests on this role.

Source
Official fact on this object, with its locator.
- EU Artificial Intelligence Act 2024/1689
  Locator: Article 3(58)
  praxikon:eu:ai-act:source:reg-eu-2024-1689
  Open official source
Via
No condition or exception recorded on this object.
Consequence
- ActorProvider of an AI system
  praxikon:eu:ai-act:actor:provider

What this object states

Official fact

Attributable to a named primary source, with a locator. Where they differ, the official source prevails.

Article 3(58) defines subject, for the purpose of real-world testing, as a natural person who participates in testing in real-world conditions.
- Locator: Article 3(58)praxikon:eu:ai-act:source:reg-eu-2024-1689Open official source

Our interpretation

Our own reading. It can change without the law changing, and it is not the position of a supervisory authority.

The definition looks trivial but determines who is protected. Whoever is a subject is entitled to informed consent under point 59 and to the safeguards of Articles 57 and 60. The misunderstanding lies in assuming that only external test participants are subjects. Employees who work with a test system during their job can also be subjects, and precisely for them the voluntariness of consent is a sensitive point given the hierarchical relationship.
- Locator: Article 3(58)praxikon:eu:ai-act:source:reg-eu-2024-1689Open official source

Recommended step

A practical step we consider appropriate. Not an obligation following from the Regulation.

For each test, keep a record of the subjects or of the clearly delimited group they come from, with the date of their consent and how they were informed. Assess separately whether employees participate as subjects and how you safeguard voluntariness.
- Locator: Article 3(58)praxikon:eu:ai-act:source:reg-eu-2024-1689Open official source

When this applies

No condition recorded on this object.

When this does not apply

No exception recorded on this object.

Referring to this object

Citation block

Copy this reference into your advice, article or file. The identifier, the version and the hash keep the statement findable later, even once the dataset has moved on.

Reference

Praxikon, "Subject",
praxikon:eu:ai-act:definition:definitie-proefpersoon@1.0.0,
dataset praxikon:sys:registry:dataset:ai-act-implementation-graph 2.1.0 (schema 1.4.0),
effective_at 2026-08-08T00:00:00.000Z, known_at 2026-08-08T00:00:00.000Z,
sha256 2a16ab809e3d8274195aecfa9c536f70c3b6014bd6eb681db9591735bdf484a0,
https://www.praxikon.com/en/verkenner/definition/definitie-proefpersoon
(https://www.praxikon.com/api/v1/entities?id=praxikon%3Aeu%3Aai-act%3Adefinition%3Adefinitie-proefpersoon&effective_at=2026-08-08&known_at=2026-08-08&lang=en, accessed 2026-08-23)

Short form

praxikon:eu:ai-act:definition:definitie-proefpersoon@1.0.0 (sha256 2a16ab80)

BibTeX

@misc{praxikon-eu-ai-act-definition-definitie-proefpersoon-1-0-0,
  author       = {{Praxikon}},
  title        = {Subject},
  year         = {2026},
  version      = {1.0.0},
  number       = {praxikon:eu:ai-act:definition:definitie-proefpersoon},
  howpublished = {AI Act Change \& Evidence Graph, dataset 2.1.0, schema 1.4.0},
  note         = {effective_at 2026-08-08T00:00:00.000Z; known_at 2026-08-08T00:00:00.000Z; sha256 2a16ab809e3d8274195aecfa9c536f70c3b6014bd6eb681db9591735bdf484a0},
  url          = {https://www.praxikon.com/en/verkenner/definition/definitie-proefpersoon},
  urldate      = {2026-08-23},
  language     = {en}
}

CSL JSON

[
  {
    "id": "praxikon:eu:ai-act:definition:definitie-proefpersoon@1.0.0",
    "type": "dataset",
    "title": "Subject",
    "container-title": "AI Act Change & Evidence Graph",
    "publisher": "Praxikon",
    "version": "1.0.0",
    "number": "praxikon:eu:ai-act:definition:definitie-proefpersoon",
    "URL": "https://www.praxikon.com/en/verkenner/definition/definitie-proefpersoon",
    "language": "en",
    "issued": {
      "date-parts": [
        [
          2026,
          8,
          8
        ]
      ]
    },
    "accessed": {
      "date-parts": [
        [
          2026,
          8,
          23
        ]
      ]
    },
    "note": "dataset praxikon:sys:registry:dataset:ai-act-implementation-graph 2.1.0; schema 1.4.0; effective_at 2026-08-08T00:00:00.000Z; known_at 2026-08-08T00:00:00.000Z; sha256 2a16ab809e3d8274195aecfa9c536f70c3b6014bd6eb681db9591735bdf484a0; retrieved_from https://www.praxikon.com/api/v1/entities?id=praxikon%3Aeu%3Aai-act%3Adefinition%3Adefinitie-proefpersoon&effective_at=2026-08-08&known_at=2026-08-08&lang=en; licence https://www.praxikon.com/nl/legal/terms"
  }
]

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