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[webauthn] Merged Pull Request: non-modal "conditionally mediated" UI

From: Nina Satragno via GitHub <sysbot+gh@w3.org>
Date: Wed, 29 Jun 2022 19:34:39 +0000
To: public-webauthn@w3.org
Message-ID: <pull_request.closed-576057230-1656531276-sysbot+gh@w3.org>
nsatragno has just merged equalsJeffH's pull request 1576 for https://github.com/w3c/webauthn:

== non-modal "conditionally mediated" UI ==
This PR enables a non-modal "conditionally mediated" UI feature for WebAuthn which RPs may utilize to provide a credential selection UI _only if the user has a discoverable credential registered with the Relying Party on their authenticator_ (the latter being the "condition"). The credential is displayed alongside an autofilled username or password input field. This helps RPs solve the "bootstrapping problem" when migrating their user base from traditional username and password to WebAuthn: websites can fire a WebAuthn call while showing their typical username and/or password prompt without worrying about showing a modal dialog error if the device lacks appropriate credentials.

See also: [Explainer: WebAuthn Conditional/Hinted UI](https://github.com/w3c/webauthn/wiki/Explainer:-WebAuthn-Conditional-UI),
as well as this related [Credential Management PR #155](https://github.com/w3c/webappsec-credential-management/pull/155)  (merged)

fixes #1545

Overview "omnibus" issue: #1637
See also discussion in Issues #1356 #1533 #1568


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<a href="https://pr-preview.s3.amazonaws.com/nsatragno/webauthn/pull/1576.html" title="Last updated on Jun 29, 2022, 7:30 PM UTC (9e55a6b)">Preview</a> | <a href="https://pr-preview.s3.amazonaws.com/w3c/webauthn/1576/3cdea2b...nsatragno:9e55a6b.html" title="Last updated on Jun 29, 2022, 7:30 PM UTC (9e55a6b)">Diff</a>

See https://github.com/w3c/webauthn/pull/1576


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