Debating Age Verification in the EU: Criticism, Privacy Concerns, and Technical Challenges

The debate surrounding the EU’s online age verification system is heating up. While privacy concerns have sparked criticism, technologist and blogger Vrypan (blog.vrypan.net) sharply points out that many of these critiques are rooted in “ignorance or intentional misunderstanding.” But is there truly a problem with the EU’s approach? This article examines the issue from a technical perspective.

Validity of Age Verification

The question of whether age verification should exist at all is fundamentally ideological. Those who oppose any form of age verification will reject all implementations outright. However, Vrypan argues that children aged 9, 10, or 14 are not ready to roam the internet unrestricted.

This issue goes beyond parental preferences. Children and teenagers are still developing cognitive, emotional, and social skills needed to deal with threats like manipulation, addiction loops, sexual content, gambling mechanics, grooming (sexual solicitation targeting minors), harassment, and algorithm-driven radicalization. Children are particularly vulnerable to these risks, which even adults often struggle to manage.

Some may counter, “Isn’t parenting the family’s responsibility?” While parents can set strict boundaries for younger children, they are obligated to gradually loosen these restrictions as their children enter their teenage years. Teenagers need spaces to act independently, make decisions, and interact with others. They require environments where they can explore the world without parental oversight. The real issue lies in whether online spaces can be designed to provide such graduated freedoms.

Another argument—“My child is smart and confident enough not to engage in risky behavior”—is understandable. But not all children possess the same temperament, support systems, confidence, or parental protection. Even grounded, intelligent teenagers can sometimes find themselves in vulnerable situations.

We already accept age restrictions in other areas. Children must reach a certain age before they can drive, drink alcohol, gamble, or enter specific establishments. It is not unreasonable to impose age restrictions on parts of the internet. The real challenge is not whether age restrictions are justified but how to implement them without turning the internet into a checkpoint for identity verification.

Nature of the Criticism

Many people equate age verification with scanning passports, uploading them, submitting selfies, or complying with facial recognition. These are already standard practices for many services. If implemented in this manner, critics’ concerns would be valid.

Requiring users to submit their name, date of birth, ID number, photo, address, and passport to adult sites, gambling platforms, online alcohol retailers, or even religious forums would indeed pose a severe privacy risk. Sharing such sensitive information with content-specific websites is particularly dangerous.

Another common approach involves authentication through trusted third parties. Users might log in via their bank credentials, Google or Apple accounts, mobile carriers, or government ID verification services. This eliminates the need to provide documents to websites but introduces another problem: identity providers can track which age-restricted sites you visit.

Potential Technical Solutions

The key question is whether age verification inherently violates privacy or whether the issue lies in its implementation. Vrypan’s argument is clear: with proper technical design, age verification can be implemented as “attribute proof” rather than “identity verification.”

Zero-Knowledge Proof (ZKP) is one promising solution. This technology allows users to prove they meet a certain age requirement without revealing their exact age, name, or address. Using ZKP, websites can confirm only that “this user is over 18,” without collecting any other personal data.

Other methods under consideration include Attribute Certificates and anonymous authentication tokens. For example, governments could issue digitally signed “age-proof tokens,” which users would generate locally on their devices. Websites would only verify the token’s validity without tracking users’ identities.

The EU’s eIDAS (Electronic Identification and Trust Services Regulation) framework has begun acknowledging the principle of “minimal disclosure.” However, many regulatory proposals still assume ID scans, which remain a source of criticism.

Implementation Challenges

Even if technically feasible, implementation faces several hurdles.

First, widespread adoption of age verification systems requires issuing authorities—governments or public institutions—to establish infrastructures for issuing digital certificates. Currently, physical ID cards dominate in many countries, and digital signature-compatible systems are limited.

Second, user experience poses a challenge. ZKP and attribute proofs are technically complex and may be difficult for average users to understand. The more complicated the authentication process, the higher the likelihood of user drop-off. Given that ID scans are already widespread as a “simple and intuitive” option, transitioning to alternative technologies won’t be easy.

Third, there’s the risk of misuse. Techniques to bypass age verification systems, such as forging certificates or attacking authentication processes, are constantly evolving. Decentralized and highly anonymous systems face trade-offs, as detecting fraud becomes more challenging.

Vrypan notes that critics often conflate “ID scan-based age verification” with the technically feasible “attribute-proof-based age verification.” However, in practice, the distinction between these approaches is not always clear. Regulatory authorities could misinterpret technical details and mandate “ID scanning.”

Editorial Opinion

In the short term, the EU’s age verification regulations are likely to be enacted as concrete legislation within the next six months. Given that much of the criticism stems from a lack of understanding of technical specifics, it is unlikely that the core regulations will be rolled back. Instead, amendments might focus on expanding implementation options, particularly by recognizing Zero-Knowledge Proof and attribute proofs as “equivalent.”

In the long term, this debate may drive a paradigm shift in identity management. The traditional “all-or-nothing” identity verification model may evolve toward a system that proves only necessary attributes. This could enhance overall online privacy protections while posing risks of expanding government surveillance infrastructure. Over the next one to three years, observers will be watching to see if similar regulations spread to other developed countries, including Japan.

The editorial team believes that while technical feasibility is important, the practical challenges of implementation must not be underestimated.

References

• What’s wrong with EU age verification? (Nothing) — Published June 29, 2026