Works with 1000+ Accounts: Compatible with Google, Microsoft, and Apple. A single Security Key NFC secures 100 of your favorite accounts, including email, password managers, and more. Fast & Convenient Login: Plug in your Security Key NFC via USB and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required. Trusted Passkey Technology: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series. Built to Last: Made from tough, waterproof, and crush-resistant materials. Made in Sweden with the highest security standards. Primary & Spare Keys: Just like having a spare house key, we recommend buying two YubiKeys—one for daily use and one as a spare. That way you’ll never get locked out of your accounts. Non-compatible - Upgrade to the YubiKey 5 Series for use with the Yubico Authenticator App. PROVEN SECURITY (FIRMWARE 5.7): Features YubiKey Firmware 5.7, providing seamless multi-factor authentication (MFA) and phishing-resistant protection across your favorite accounts.