Something you know could be a password, while something you have could be a security key or an authenticator app. Multi-factor authentication (sometimes called two-factor authentication, or 2FA) improves password logins for websites and services by adding multiple factors from a list of three possibilities: For first-time buyers, we recommend the Security Key NFC. Editors' Choice winner YubiKey 5C NFC is a more versatile and affordable security key. That said, if you absolutely must have biometric MFA, love USB-A connectors, and are willing to shell out the extra cash, the YubiKey Bio is a great choice. This device works with the major MFA standards, but it doesn't have NFC or the wider support for authentication methods found in high-end YubiKeys. The solution is multi-factor authentication (MFA), and with the $80 Yubico YubiKey Bio, you can use your fingerprint to identify yourself. Losing control of your online accounts is a nightmare, one that could lead to outright identity theft.

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