Prohibited AI Practices
Compliance Β· 4 min Β· Updated: Feb 2026
Attention: In Force since 2 February 2025
Article 5 of the EU AI Act prohibits certain AI practices absolutely. No balancing, no exceptions β absolute prohibitions with penalties up to EUR 35M.

The 6 Prohibited Practices
1. Subversive Manipulation (Art. 5(1)(a))
What is prohibited: AI systems that lead people to harmful decisions through "subliminal techniques" or deliberate deception.
Example: An AI tool that manipulates impulsive purchasing behavior through hidden triggers.
2. Social Scoring (Art. 5(1)(b))
What is prohibited: AI systems that evaluate persons based on their social behavior or non-legally justified criteria.
Example: A system that assesses creditworthiness based on social media activity.
3. Biometric Categorization (Art. 5(1)(c))
What is prohibited: Use of biometric data to categorize persons in real-time at public places.
Example: Real-time facial recognition in public places to detect "suspicious behavior".
4. Emotion Recognition in Workplace (Art. 5(1)(d))
What is prohibited: AI systems for emotion recognition in the workplace and educational institutions.
Example: Webcam analysis during job interviews to assess "trustworthiness" or "nervousness".
5. Untargeted Facial Data Collection (Art. 5(1)(e))
What is prohibited: Creating or expanding databases through untargeted collection of facial images from the internet.
Example: Scraping social media profiles to create face recognition databases.
6. Government Social Scoring Systems (Art. 5(1)(f))
What is prohibited: AI systems by government agencies that score citizens based on social behavior.
Example: Automated decisions about social benefits based on "risk scores".
Exceptions
Certain biometric applications are allowed:
- Facial recognition for law enforcement (with authorization)
- Emergency searches (missing persons, terrorism)
- Medical applications
- Critical infrastructure security
What Companies Must Do Now
- Check all AI systems for prohibited practices
- Update documentation of existing systems
- Review contracts with AI providers
- Create internal guidelines for permitted AI use
Sources
Related articles: EU AI Act Β· EU AI Act Checklist
For implementation support, find resources at ai-engineering.at.
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