Thetis Nano‑C FIDO2 Security Key — USB‑C Hardware Passkey (TOTP/HOTP, 2FA/MFA)

Ultra‑compact USB‑C security key for passwordless login and strong two‑factor authentication. The Thetis Nano‑C is FIDO‑certified and built for cross‑platform protection — plug into desktops or carry on a keyring for mobile use.

• FIDO2 & WebAuthn passkey support — Passwordless sign-in using CTAP2/WebAuthn where supported.
• Works across devices — USB‑C compatible with Windows, Mac, iOS (USB‑C iPhones), Android, Linux.
• Broad service compatibility — Compatible with Google/Gmail, Microsoft, GitHub, Dropbox, Facebook, Coinbase and many other FIDO‑ready services. (Please check each service’s passkey support before purchase.)
• Large credential storage — Up to 200 FIDO2 passkey slots plus 50 OATH‑TOTP/HOTP slots for flexible 2FA/MFA setups.
• Tiny, durable design — 0.73 × 0.60 × 0.30 in; weighs 0.04 oz — plug‑and‑stay or attach to your keychain.
• FIDO certified — Meets FIDO and FIDO2 standards for strong phishing‑resistant authentication.
• Easy to use — No drivers required for most platforms; works with WebAuthn‑enabled websites and apps.
• Portable security for mobile & desktop — Keep one key for all your devices that support USB‑C.

Important notes

• Chrome browser account login is supported across Windows versions.
• Windows Hello sign‑in may require Windows Enterprise edition with Entra ID.
• ID Austria (FIDO2 L2) is not supported.
• Not all websites/services currently support passkeys — verify compatibility with each provider.

Specifications

• Color: Black
• Connectivity: USB Type‑C (USB)
• Model: Thetis Nano C FIDO2 Security Key (MB000504)
• Dimensions: 0.3" D × 0.6" W × 0.3" H (Item size 0.73 × 0.60 × 0.30 inches)
• Weight: 0.04 ounces
• Memory/Slots: 200 FIDO2 passkey slots; 50 OATH‑TOTP slots
• UPC: 850065774039 — ASIN: B0F3JX7F76
• Release date: June 19, 2025 — First available: April 2, 2025
• Manufacturer: Thetis

Why choose the Thetis Nano‑C?

• Phishing‑resistant, standards‑based security (FIDO2)
• Fits in your pocket or on your keyring — ideal for frequent travelers and mobile users
• Consolidate multiple accounts and 2FA tokens on one compact device

Add hardware‑based passkeys to your security stack — protect Gmail, GitHub, Coinbase and more with a single, portable FIDO2 USB‑C key. Buy now to simplify logins and strengthen account security.

Secure your accounts with this ultra-compact FIDO2 security key. Featuring USB Type C compatibility, it provides passwordless login and robust multi-factor authentication.

Best Value

Thetis Nano-C FIDO2 Security Key

Ultra-Compact Design and Cross-Platform Support