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# EphemeralBrowserSessionIsSupported

A Boolean that indicates whether the app supports ephemeral browsing when conducting authentication sessions.

## Discussion

Set the corresponding value to `YES` to indicate that your browser app, when handling authentication requests, offers ephemeral browsing.

If you don’t provide the key, or if you set its value to `NO` and an app tries to conduct an ephemeral authentication session, the system warns the user. If do you declare support by setting the value to `YES`, be sure to respect the <doc://com.apple.documentation/documentation/AuthenticationServices/ASWebAuthenticationSessionRequest/shouldUseEphemeralSession> property on any incoming authentication requests, as described in <doc://com.apple.documentation/documentation/AuthenticationServices/supporting-single-sign-on-in-a-web-browser-app>.

> Note:
> It’s strongly recommended that your web browser support ephemeral sessions. Apps can specifically request this kind of session, and it’s important to honor the request.

---

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