I use Bitwarden, and I am not very enthused by this news. Biometrics are not as secure as a strong password with 2FA, especially face ID. A password vault should have the strongest protection you have available.
I suppose it's better than someone using a weak password or PIN, but there's no way I'd use this feature.
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Say Hello to Windows Hello and Touch ID in the Bitwarden Desktop App | Bitwarden Blog
https://bitwarden.com/blog/post/introducing-desktop-biometrics/