[webauthn] Pull Request: Add new credential signature count parameter to Set Credential Properties virtual authenticator endpoint

MasterKale has just submitted a new pull request for https://github.com/w3c/webauthn:

== Add new credential signature count parameter to Set Credential Properties virtual authenticator endpoint ==
This PR adds a new `signCount` parameter to the **Set Credential Properties** virtual authenticator endpoint. This new parameter will enable Relying Parties to automate e.g. the testing of cloned authenticator detection scenarios.

Partially addresses #2363.

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The following tasks have been completed:

- [ ] Modified Web platform tests ([link](https://github.com/web-platform-tests/wpt/))

Implementation commitment:

- [ ] WebKit ([link to issue](https://bugs.webkit.org/))
- [ ] Chromium ([link to issue](https://issues.chromium.org/issues/new?component=1456855&template=0))
- [ ] Gecko ([link to issue](https://bugzilla.mozilla.org/home))

Documentation and checks

- [ ] Affects privacy
- [ ] Affects security
- [ ] Updated explainer ([link](https://github.com/w3c/webauthn/wiki))


See https://github.com/w3c/webauthn/pull/2382


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Received on Tuesday, 27 January 2026 00:19:14 UTC