Verification method
ZYKAY uses the European Digital Identity (EUDI) Wallet as the sole identity verification method.
Overview
| EUDI Wallet | |
|---|---|
| Method | EUDI Wallet (ISO 18013-5 mdoc or SD-JWT) |
| Protocol | OpenID4VP (selective disclosure) |
| Speed (first time) | ~15 seconds |
| Speed (return) | ~1.7 seconds (instant connection) |
| Scopes available | isAdult, isFrench, isEU, isUnique |
| Backend (Exchange API) | POST /v1/exchange with HMAC |
| User prerequisites | eIDAS 2.0 compliant EUDI Wallet |
ZYKAY consumes member-state-signed identity credentials through OpenID4VP. The state-issued signature guarantees authenticity and the IACA trust chain is verified server-side.
User experience
The EUDI Wallet delivers the best user experience: near-instant feedback (~1.7s), no document handling, and the server never sees the user's personal data. All attributes remain inside the citizen's wallet.