(Credit: Kim Key)
Nitrokey 3C NFC authentication standards are a bit more varied than those of less expensive and more popular starter keys, such as Google’s Titan Key ($30). Like Google’s key, Nitrokey 3C NFC supports the following authentication standards: CTAP2/FIDO2, CTAP1/FIDO U2F 1.2, HOTP RFC 4226, TOTP RFC 6238, HOTP verification, and WebAuthn.
Like the pro-level $55 YubiKey 5C NFC, the Nitrokey 3C NFC enables you to encrypt data, such as emails and information stored on hard drives, and unlock it using GnuPG, an open-source encryption and decryption software.
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Nitrokey 3-series keys also support email encryption via OpenPGP, S/MIME, Thunderbird, or Outlook. You can use Nitrokey to encrypt your hard disks using LUKS or VeraCrypt. The Nitrokey can also function as a smart card, and supports the following standards: OpenPGP Card (GnuPG), NIST PIV, PKCS#11 (OpenSC), S/MIME, Windows MiniDriver, and X.509.
Business users may be interested in Nitrokey’s support for passwordless logins on computers managed by Azure Active Directory. The aforementioned YubiKey 5C NFC is compatible with a wide range of enterprise services, including AWS Identity and Access Management (IAM), Duo Security, ForgeRock, Idaptive, Microsoft Azure Active Directory, Okta, OneLogin, and Ping Identity.

