At $55, the 5C falls between the other two, still putting it at the high end. Notably, the $50 5 Nano and the $60 5C Nano are designed to sit semi-permanently within USB-A or -C ports. The double-headed 5Ci costs $70 and the 5 NFC just $45. As you might guess, 2FA requires you to use two factors in order to get access to whatever it's protecting. Two-factor authentication, sometimes abbreviated as 2FA, is the most common form of multifactor authentication you're likely to encounter. Using at least two of these means you're using multifactor authentication. A hardware authenticator like a Yubico YubiKey is something you have. Something you are could include biometrics, like a fingerprint scan. Most of us use password authentication in our day-to-day lives, which is something you know. The term " multifactor authentication" comes from the idea that there are three ways to prove who you are by presenting at least one of the following: Something you know, something you have, or something you are. At $55 it's not the cheapest option, but its sheer versatility makes it a new Editors' Choice winner. The 5C NFC also has a variety of authentication capabilities and will work with just about any recent device you own. Hardware multifactor keys like the Yubico YubiKey 5C NFC provide all the security of competing systems, but they do so without moving parts, batteries, or an internet connection.
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