Multifactor authentication (sometimes called two-factor authentication or 2FA) is a method for verifying your identity using two factors from a list of three options: As an entry-level device, the Nitrokey FIDO2 is a strong choice but Editors' Choice winner Yubikey 5C NFC packs wireless communication and additional MFA capabilities into a sleek package. Using the Nitrokey FIDO2 with mobile devices will require a dongle, however, and it lacks the impressive encryption features found in other Nitrokey devices. Small, German, affordable, and with support for the latest MFA standards, it helps secure your logins against attacks and relies on tried-and-tested, open-source technology.

If that sounds like you, then the €29 ($33.52, at the time of writing) Nitrokey FIDO2 is a go-to choice in the world of multifactor authentication (MFA) security keys.

How to Set Up Two-Factor Authenticationįor a certain kind of person, only open-source will do.

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