"Failed to activate face or touch unlock" occurs on Mac with RoboForm Password Manager

[k-kazuya0926]

Hello, I tried Implement Passwordless authentication with Amazon Cognito and WebAuthn.
Then I got "Failed to activate face or touch unlock" errors on my Mac(M3 Pro).
I got them both on Chrome and Safari.
But I didn't get them on my iPhone 12.
I'd like you to help me.

amazon-cognito-passwordless-auth

0.14.2

M3 Mac Pro

Sonoma 14.7

Chrome

Version 129.0.6668.90 (Official Build) (arm64)

Safari

Version 18.0 (19619.1.26.111.10, 19619)

iPhone 12

iOS 17.6.1

Safari

[ottokruse]

Do you have a browser plug in that intercepts passwords? That's a reason I have seen for weird behaviors like that.

Probably triggered by this:

amazon-cognito-passwordless-auth/client/fido2.ts

Lines 87 to 90 in 21f72ff

	if (
	!(credential instanceof PublicKeyCredential) ||
	!(credential.response instanceof AuthenticatorAttestationResponse)
	) {

We could exchange the instanceof checks for structural checking.

[k-kazuya0926]

@ottokruse
Thank you very much!
I'm using RoboForm Password Manager plugin.
I disabled it and tried again, then I succeeded to register an authenticator!

We could exchange the instanceof checks for structural checking.

I recognized that if you would do it, I will be able to register an authenticator using RoboForm Password Manager plugin.
If yes, I'm glad if you would do it!

[ottokruse]

Pretty annoying that password managers inject themselves in such non-transparent ways. Seen this with 1password before as well.

[k-kazuya0926]

@ottokruse
I understand.
Just to be sure, is it possible that you fix this problem?

[ottokruse]

Possible yes but if you want to expedite it feel free to send a PR