Support signing in with Fingerprint Sensor―Chrome for Android

[grzuy]

Conversation of this actually started here cedarcode/webauthn-ruby#68

Support WebAuthn ceremonies with:

• Authenticator: Fingerprint Sensor
• User agent: Chrome for Android

Chromium Blog announcement: https://blog.chromium.org/2018/09/chrome-70-beta-shape-detection-web.html

[grzuy]

I wasn't able to get the Android Fingerprint request pop-up on "Chrome for Android 69"
I wasn't able to get the Android Fingerprint request pop-up on "Chrome for Android 70 (Beta)"
I was able to see the fingerprint pop-up on "Chrome for Android 71 (Dev)"

[grzuy]

Moved @sorah comments to #32, as requested.

[grzuy]

@bdewater I was able to successfully sign in to https://webauthn.herokuapp.com with:

• Android 9
• Chrome Beta 70.0.3538.46
• Phone Fingerprint Sensor via the native Android pop-up

That Chrome version was released few days ago, previous Beta 70 patch version didn't worked for me.

@bdewater Still not working for you?

[grzuy]

@brauliomartinezlm Working for you?

[brauliomartinezlm]

Yes. For me it's currently working on:

• Android 8.1.0
• Chrome Beta 70.0.3538.46, Chrome Dev 71.0.3574.0 and Chrome Canary 71.0.3575.0
• Phone Fingerprint Sensor via the native Android pop-up

[grzuy]

Great.

@bdewater Let us know in case not working for you. We can re-open this.

[bdewater]

It worked for me - in #33 (comment) I figured out what went wrong.

[grzuy]

Cool, thanks for confirming :-)