Article 50 of the EU AI Act: from transparency obligations to implementation questions

Written by Zoi Roupakia

The EU AI Office published its draft guidelines on Article 50 transparency obligations last month. Noetic AI and its founder, Zoi Roupakia, served on the working groups that informed this process. The consultation closes 3 June. This is my read of the draft.

Article 50 of the AI Act covers four transparency obligations: informing users they are interacting with an artificial intelligence (AI) system; machine-readable marking and detection of AI-generated content; disclosure for emotion recognition and biometric categorisation systems; and labelling of deep fakes and AI-generated text published in the public interest. The guidelines apply from 2 August 2026.

The document is thorough on the mechanics. The treatment of agentic AI systems is more substantive than most comparable guidance. It acknowledges that providers may not always be able to identify individual instances of interaction and instructs agents to disclose their nature whenever interaction with a natural person is likely. The worked examples throughout are useful. The summary table in the opening section is one of the clearer overviews of the regulation available.

There are, however, points that deserve further attention before the consultation closes. Three are set out below.

Marking and detection: technically demanding, but not yet operationally proportionate

Article 50(2) requires machine-readable marking and detection of AI-generated content using solutions that are effective, interoperable, robust, and reliable. The guidelines acknowledge (paragraph 78) that no single technique currently meets all four criteria simultaneously, meaning providers must combine methods. The guidelines also refer to technical feasibility and implementation costs, but they do not translate these considerations into a clear, operational proportionality framework for startups and small and medium-sized enterprises. Smaller providers may therefore face uncertainty about what level of marking and detection capability is sufficient, particularly where state-of-the-art technical solutions are still evolving.

The obviousness exception sets a fixed standard applied to a changing technology

The Article 50(1) exception for interaction that is obvious to a reasonably well-informed, observant and circumspect person borrows from European Union consumer law. The approach is defensible in principle. However, the guidelines do not account for how quickly AI capabilities change. A voice assistant that was recognisably non-human two years ago may not be today. The standard requires periodic reassessment, but the guidelines provide no mechanism for when or how that reassessment occurs. The final guidelines should encourage periodic reassessment and, where appropriate, user testing with the intended audience.

The business-to-business exemption needs greater precision

Paragraphs 81 and 82 exempt certain industrial AI applications from the marking requirement where outputs are strictly technical in nature and accessed only by a limited pre-defined number of natural persons acting in a professional capacity. Both conditions may generate interpretive divergence across Member States, as national market surveillance authorities may define “strictly technical” differently. This matters because technical outputs are not always low-impact. In industrial settings, AI-generated instructions, risk assessments, workflow recommendations, or quality-control reports may influence human judgement, worker safety, and organisational accountability, even when they are not published externally. The guidelines should set clearer boundaries.

The direction of the guidelines is welcome. The remaining questions are practical ones: how to apply the rules consistently, proportionately, and in ways that improve user understanding rather than simply adding formal disclosures. The consultation is open because the Commission is seeking input before these guidelines are finalised. If you build or deploy AI systems in Europe and have a view, the portal is open until 3 June.

Consultation portal: https://digital-strategy.ec.europa.eu/en/consultations/consultation-draft-guidelines-transparency-obligations-under-ai-act