Yubico’s entry-level hardware security key offering FIDO2/WebAuthn support at a lower price point, available in USB-A and USB-C variants, with NFC on select models.
Yubico Security Key
Win Mac Linux Android iOS Closed-Source Sweden
Official website yubico.com/products/security-key
Our take
If all you need is phishing-resistant FIDO2 login for web accounts and password managers, the Yubico Security Key does the job at roughly half the price of the 5 Series. The trade-off is scope: it drops TOTP, PIV smart card, and OpenPGP support entirely. That is fine for most people who just want to stop password and SMS-based account takeovers, but users who need a single key that also handles SSH keys or encrypted email should step up to the 5 Series instead.
Listed in
Yubico Security Key alternatives
YubiKey 5 Series Full-featured hardware security key from Yubico supporting FIDO2/WebAuthn, TOTP/HOTP, smart card (PIV), and OpenPGP across multiple form factors including USB-A, USB-C, and NFC variants.
Nitrokey Open-source hardware security key line from Berlin-based Nitrokey, with models ranging from the FIDO2-only Nitrokey Passkey to the Nitrokey 3, which adds PIV smart card, OpenPGP, and TOTP support.