213895 2020-07-02 12:26:54 -0700 [WebAuthn] problem with uv = required for getAssertion 2020-08-11 11:59:52 -0700 1 1 1 Unclassified WebKit WebCore Misc. Safari Technology Preview iPhone / iPad Other RESOLVED WORKSFORME P2 Normal --- 181943 1 loginllama webkit-unassigned jiewen_tan loginllama oldest_to_newest 1668319 0 loginllama 2020-07-02 12:26:54 -0700 In iOS 14 developer beta The authenticator has a pin set: The Authenticator is attached over USB/Lightning. If in WebAuthn uv is unset, or set to preferred authentication works as expected the user is prompted for a pin and the credential is asserted with uv=1 in authenticator data. If in WebAuthn uv is set to discouraged authentication works as expected the user is not prompted for a pin and the credential is asserted with uv=0 in authenticator data. If in WebAuthn uv is set to required, the user is prompted to insert and activate the security key. After doing UP the dialogue is stuck until it times out. NFC attachment seems to have the same issue. Strange preferred works but not required. 1668616 1 loginllama 2020-07-03 12:39:29 -0700 Doing some more testing I discovered that uv = required from the RP will work if the authenticator advertises support for internal uv in its getInfo. There is not a one to one mapping between uv in webAuthn and the UV option in getAssertion. 1675534 2 jiewen_tan 2020-07-28 01:02:05 -0700 I have tried a Yubico Blue Security Key with PIN set, same model with no PIN, and a Feitian BioPass on https://webauthntest.azurewebsites.net with UV = required, and cannot reproduce. Can you suggest a more detailed way of reproducing the issue?