Understanding Passkey UserVerification and its Impact on Authentication Experiences in your Products
summary
Explains that WebAuthn’s UV flag signals UV flag values: required/preferred/discouraged to authenticators and that biometric data never becomes part of the passkey. Shows a combinations matrix mapping registration vs authentication choices to authentication confidence vs user friction and to step‑up ability, warns that preferred is default and platforms differ (iPhone auto‑biometrics, desktop may not), and emphasizes relying parties must check attestation response object because the flag is the only reliable signal.
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chapters (11)
- 0:00Introduction
- 0:26What is user verification
- 1:50UV in registration and auth
- 3:17UV options required discouraged preferred
- 5:26User verification combinations matrix
- 7:57Impact on user friction
- 8:18Authentication confidence explained
- 11:09Step up confidence with passkeys
- 12:11Applying UV to use cases
- 14:18UV flag responsibilities
- 15:01Q&A session
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