SECURITY KEY: Protect your online accounts against unauthorized access by using 2 factor authentication with the Yubico YubiKey 5 Nano security key - the world's most protective USB security key that works with more online services/apps than any other. FIDO: The YubiKey 5 Nano is FIDO certified and works with Google Chrome and any FIDO-compliant application on Windows, Mac OS or Linux. Secure your login and protect your Gmail, Facebook, Dropbox, Outlook, LastPass, Dashlane accounts, 1Password, and more. FITS USB-A PORTS: Once registered, each service will request you to insert the YubiKey PC security key into a USB-A port and simply tap to gain access. The extra compact size is designed to stay in the port so you can stay connected and secure anywhere. DURABLE AND SECURE: Extremely secure and durable, YubiKeys are tamper resistant, water resistant, and crush resistant. The YubiKey 5 Nano is designed to protect your online accounts from phishing and account takeovers. MULTI-PROTOCOL SUPPORT: The YubiKey USB authenticator has multi-protocol support including FIDO2, FIDO U2F, Yubico OTP, OATH-TOTP, OATH-HOTP, Smart card (PIV), OpenPGP, and Challenge-Response capability to give you strong hardware-based authentication.