The New ID for the Internet: Why Digital Identity Is More Than Just a Login

Technology Meets Trust: Interview with Louis Tajan

On June 10, 2025, at the opening of the “Proof of Talk” conference in the Louvre in Paris, more than 2,500 experts discussed regulation, identity, and Web3 security. Ulrich Buckenlei spoke with Louis Tajan, Lead Cryptographer at Human.Tech, about building secure digital identities – beyond biometric surveillance and centralized control.

• Zero-Knowledge instead of data disclosure: Human.Tech enables transactions without revealing sensitive user data – using zero-knowledge proofs and multiparty computation.
• Privacy-by-Design: Digital identity is designed securely from the ground up – processed locally, implemented with encryption.
• Web3 with UX focus: Security and user-friendliness are not mutually exclusive – in fact, they complement each other.

Impressions Louvre Paris

^{Photo: Ulrich Buckenlei XR Stager NewsRoom | Event: Decentralized Identity & Web3 Trust}

Tajan sees cryptography as the key to a human-friendly digital space – scalable, secure, and free from surveillance.

Proof of Personhood: Making Humanity Verifiable

Tajan’s approach: In an age of AI bots, deepfakes, and automated disinformation, we need verifiable humanity. “Proof of Personhood” is not a control tool – it’s a system that protects real users and enables machine filtering.

• No biometric capture: Unlike Worldcoin, Human.Tech does not store iris scans or similar data.
• Verification through cryptography: Local checks with global significance – without centralized databases.
• Web3 without bot armies: Trust is created through mathematically verifiable individuality.

Impressions from Proof of Talk, Louvre Paris

^{Photo: Ulrich Buckenlei XR Stager NewsRoom | Event: Decentralized Identity & Web3 Trust}

The system protects privacy, prevents identity abuse, and enables trust without storing personal data.

Security and Usability: Not a Contradiction

A central point in Tajan’s work: Security must not be a barrier. Cryptographic processes run in the background – for users, the process is simple, intuitive, and fast.

• Click instead of control obsession: Instead of complex KYC processes: a single verified authentication step.
• UX design meets cryptography: Security is seamlessly embedded – not added as an afterthought.
• Scalability included: The system works for startups as well as large platforms.

Impressions from Proof of Talk, Louvre Paris

^{Photo: Ulrich Buckenlei XR Stager NewsRoom | Event: Decentralized Identity & Web3 Trust}

Security is integrated directly into the architecture – no trade-off between comfort and control.

Europe, the AI Act, and Technical Guardrails

Tajan sees Europe’s cautious course as a strength. The AI Act provides clear guidelines that developers can rely on – even if innovation progresses more slowly as a result.

• Trust through regulation: Clear guardrails promote sustainable development.
• Contrast to the US & China: There, the “move fast, break things” principle often prevails – at the users’ expense.
• European advantage: Those who implement privacy by design have an edge in the global market.

Impressions from Proof of Talk, Louvre Paris

^{Photo: Nvidia| Event: Decentralized Identity & Web3 Trust}

The Louvre became the stage for a new kind of digital enlightenment – with a focus on technical standards and user sovereignty.

Cryptography Is the Foundation – Also for AI

For Tajan it’s clear: whether voting systems, wallets, or AI-powered services – trust begins with cryptographic integrity. AI can optimize tools, but it cannot replace ethics.

• AI as a tool – not a decision-maker: Technology must serve people – not the other way around.
• Cryptography for AI processes: Even training data and models need traceable origins and verification.
• Security-by-Design: Any application that affects people needs a solid crypto foundation.

Conclusion: Rethinking Identity – With Technology, Not Despite It

The conversation with Louis Tajan shows: digital identity doesn’t need to be centralized, complex, or surveilling. With technologies like zero-knowledge proofs, decentralized infrastructure, and UX-focused cryptography, Web3 becomes practical – and human-friendly.

• Technology as an enabler: The right protocols make digital freedom possible in the first place.
• Identity as a feature, not a risk: Protecting users creates long-term trust.
• Web3 for people, not machines: Proof of Personhood is becoming the standard – data-efficient, secure, scalable.

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