Browser support of FIDO2 passwordless authentication CAS - U2F - FIDO Universal 2nd Factor Authentication Intent to Deprecate and Remove: U2F API (Cryptotoken) "U2F browser support is needed for Ledger. U2F - FIDO Universal Authentication. If you didn't find your browser in the list, this is not a confirmation that 2FA for Bitbucket: U2F & TOTP does not support it. U2F checker Why doesn't Safari support FIDO U2F for 2… - Apple Community Firefox in particular will not be supporting U2F except behind a flag. U2F and Adaptive MFA. As to which other browsers support U2F: currently none. Opera, version 40 and later. CTAP 1 / U2F Legacy Support - The browser has legacy support for authenticators only supporting U2F. FAQ about U2F and 2-factor authentication (2FA) - Dashlane U2F was developed by the Fast IDentity Online (FIDO) Alliance, a technology consortium backed by corporations, such as Google, Microsoft, VISA, and Bank of America, to address the lack of interoperability among strong authentication devices. After a user enters their login credentials, they simply press or tap a small device inserted in their computer's USB port, which acts as . Set up and use MyEtherWallet - Ledger Support Firefox supports U2F via the U2F Support Add-on, and is working on supporting U2F natively. We encourage the adoption of Web Authentication . This allows users to log into sites more securely using two-factor authentication with a USB dongle. To use this to test U2F support in Firefox using its built-in software token, do the following: Open the Firefox advanced preferences in about:config.