[webauthn] Platform authenticator support is inconsistent in private/incognito modes (#1465)

herrjemand has just created a new issue for https://github.com/w3c/webauthn:

== Platform authenticator support is inconsistent in private/incognito modes ==
So during the recent testing, I've discovered that support for platform authenticator vary between Chromium based browsers and Firefox.

In Chromium browsers platform authenticator is not available in Privacy/Incognito mode, and isUserVerifyingPlatformAuthenticatorAvailable() returns false:

Microsoft Edge
![Screenshot 2020-08-06 at 21 30 34](https://user-images.githubusercontent.com/1636116/89569241-17a46880-d82d-11ea-89db-aabbf1ef17b3.png)

Google Chrome
![Screenshot 2020-08-06 at 21 29 28](https://user-images.githubusercontent.com/1636116/89569262-1ecb7680-d82d-11ea-9a69-08b83b7beaa4.png)

Where Firefox allows usage of the platform authenticator in the Privacy/Incognito mode.

![Screenshot 2020-08-06 at 21 31 36](https://user-images.githubusercontent.com/1636116/89569318-3acf1800-d82d-11ea-86d4-3f8d21532ff3.png)

I can not see any mention that browsers shall or must restrict platform authenticators in the Privacy/Modes.


Please view or discuss this issue at https://github.com/w3c/webauthn/issues/1465 using your GitHub account


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Received on Thursday, 6 August 2020 18:39:50 UTC