We'd like to give developers some more time to test how well it performs and provide feedback.
There is also an ongoing discussion with TAG about the privacy properties, and a proposal to change the API details (noted in the explainer). We're aiming to leave time for iteration. On Wed, Sep 3, 2025 at 10:18 AM Alex Russell <[email protected]> wrote: > Any reason not to ship instead? > > On Tuesday, September 2, 2025 at 10:28:18 PM UTC+1 Ken Buchanan wrote: > >> Contact [email protected], [email protected] >> >> Explainer >> https://github.com/w3c/webauthn/wiki/Explainer:-WebAuthn-immediate-mediation >> >> Specificationhttps://github.com/w3c/webauthn/pull/2291 >> >> Design docs >> >> https://github.com/w3c/webauthn/wiki/Explainer:-WebAuthn-immediate-mediation >> >> Summary >> >> A mediation mode for navigator.credentials.get() that causes browser >> sign-in UI to be displayed to the user if there is a passkey or password >> for the site that is immediately known to the browser, or else rejects the >> promise with NotAllowedError if there is no such credential available. This >> allows the site to avoid showing a sign-in page if the browser can offer a >> choice of sign-in credentials that are likely to succeed, while still >> allowing a traditional sign-in page flow for cases where there are no such >> credentials. >> >> >> Blink componentBlink>WebAuthentication >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebAuthentication%22> >> >> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/1092 >> >> TAG review statusPending >> >> Origin Trial NameImmediate Mediation for Passkeys and Passwords >> >> Chromium Trial NameWebAuthenticationImmediateGet >> >> Origin Trial documentation link >> https://github.com/w3c/webauthn/wiki/Explainer:-WebAuthn-immediate-mediation >> >> WebFeature UseCounter name >> kCredentialsGetImmediateMediationWithWebAuthnAndPasswords >> >> Risks >> >> >> Interoperability and Compatibility >> >> This is a discussion topic in the Web Authentication Working Group. >> Representatives from other browser vendors are involved in this discussion >> but there are no official signals of support yet. The ability to use >> `PasswordCredential` with this mediation mode is a particular compatibility >> risk because that credential type is not currently implemented Firefox or >> Safari. >> >> >> *Gecko*: No signal ( >> https://github.com/mozilla/standards-positions/issues/1239) >> >> *WebKit*: No signal ( >> https://github.com/WebKit/standards-positions/issues/504) Interest >> expressed verbally in a WebAuthn WG F2F. >> >> *Web developers*: No signals >> >> *Other signals*: >> >> WebView application risks >> >> Does this intent deprecate or change behavior of existing APIs, such that >> it has potentially high risk for Android WebView-based applications? >> >> None >> >> >> Goals for experimentation >> >> >> >> Reason this experiment is being extended >> >> Our primary partner for this trial has experienced delays in deploying >> it, and we have gathered very little data at this point. An extension is >> requested because with the current termination milestone we are unlikely to >> be able to achieve the goals of the trial. >> >> >> Ongoing technical constraints >> >> None >> >> >> Debuggability >> >> None >> >> >> Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, ChromeOS, Android, and Android WebView)?Yes >> >> Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >> ?No >> >> DevTrial instructions >> https://docs.google.com/document/d/18iV5eUBM4NVoNx0gqPSxPyJAjPdrfIR75vcMDBewzZU/edit?tab=t.0#heading=h.uj0x12ysuohk >> >> Flag name on about://flagsexperimental-web-platform-features >> >> Finch feature nameWebAuthenticationImmediateGet >> >> Requires code in //chrome?True >> >> Tracking bughttps://issues.chromium.org/issues/408002783 >> >> Launch bughttps://launch.corp.google.com/launch/4394539 >> >> Estimated milestones >> Origin trial desktop first 139 >> Origin trial desktop last 141 >> Origin trial extension 1 end milestone 144 >> DevTrial on desktop 136 >> DevTrial on Android 141 >> >> Link to entry on the Chrome Platform Status >> https://chromestatus.com/feature/5164322780872704?gate=6329817750437888 >> >> Links to previous Intent discussionsIntent to Prototype: >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALjHGKrQEs4TDzuzb%3D0B00S4OmkE4a1NbZGi19sCueTKvN_m9w%40mail.gmail.com >> Ready for Trial: >> https://groups.google.com/a/chromium.org/g/blink-dev/c/zC13ioLIZ_E/m/P-P6B6gNCQAJ >> Intent to Experiment: >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALjHGKpJkA9G6De6D4%3DRNSbLMRdy8Yfa6B%3DgDNWeqTyHfv8sSg%40mail.gmail.com >> >> >> This intent message was generated by Chrome Platform Status >> <https://chromestatus.com/>. >> > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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