

As a fellow Bitwarden user, I recommend upvoting and replying to the feature request on their forums. Safari has only implemented the newer, standardized WebAuthn API (which covers both U2F and FIDO2 authenticators), while Bitwarden uses the older non-standard U2F API.Ĭhrome, Firefox and other browsers ship with an extension that enables the usage of the old U2F API, however, that will stop working in a few years, so it is up to Bitwarden to move to WebAuthn. I cannot use my Security Key in U2F mode as a second factor when using MacOS/Safari.īitwarden's Web Vault does not support Safari for U2F based 2FA on macOS. Yubico OTP is different from OATH-TOTP (the algorithm used by Google Authenticator and Yubico Authenticator in hardware). U2F over NFC is not supported at all on Bitwarden Mobile (Android/iOS) applications. Security Key series ONLY supports FIDO2 and U2F.įirst, there's no Bitwarden instruction page for U2F/NFC, only TOTP/NFC.īitwarden only supports Yubico OTP over NFC. You need to buy YubiKey 5 series key for that. Yubico Security Key does not have TOTP or Yubico OTP (see below) support. I'm not using the Security Key in TOTP mode.
