2026-05-10 –, Grégr Stage
What does it take to move privacy-preserving credentials from research into real products? This talk explores how anonymous credential design can support practical identity verification, what changes when theory meets deployment constraints, and what real-world implementations teach us about privacy, usability, and policy.
Privacy-preserving identity is often discussed in theory, but much less often through the lens of real implementation. This talk explores how anonymous credentials can move beyond research and support practical verification use cases without requiring services to collect unnecessary personal data.
Using OpenAC (https://github.com/privacy-ethereum/zkID/blob/main/paper/zkID.pdf) as a technical lens, I will explain why this approach matters, how we evaluated real-world use cases, and what changes when privacy goals meet product, infrastructure, and regulatory constraints. I will share lessons from two deployment-oriented cases in Taiwan: eligibility verification for an online forum platform, and online alcohol purchases connected to a government wallet ecosystem.
The talk will also reflect on how these implementation experiences may inform broader digital identity efforts, including future standards and policy-driven use cases such as EUDI. The goal is to offer practical lessons for builders thinking about privacy-preserving identity systems that can actually be adopted.
I work on privacy-preserving identity and anonymous credential implementations, with a focus on bridging research and real-world use cases. My recent work includes exploring deployments related to age and eligibility verification, government wallet integration, and practical product constraints for privacy-preserving systems.