The YubiKey 5 NFC is the world's most protective security key that works with more online services and applications than any other security key. Usernames and passwords are not enough to protect your accounts. Using a security key as a form of two-factor authentication is a simple and proven method for locking down your accounts and keeping them secure. Secure your login and protect your account with hundreds of services like Gmail, Facebook, Skype, Outlook, LastPass and more. This YubiKey delivers strong authentication over Near Field Communications (NFC) and via USB-A ports. The YubiKey is designed to protect your online accounts from phishing and account takeovers. A YubiKey makes it extremely difficult to gain access or steal your most important files, pictures, emails, and financial information. The YubiKey is simple to register with hundreds of services. Once registered, each service will simply request you to insert and tap your YubiKey to gain access during login. Simple, convenient, and secure. With YubiKey 5 NFC, you get the same asymmetric cryptography and strong security used by individuals at 9 of the top 10 technology companies. Yubico pioneered the creation of the FIDO U2F and FIDO2 authentication protocols along with Google and Microsoft. Using the YubiKey, companies have seen zero successful phishing attempts. The YubiKey 5 NFC is FIDO certified and works with Google Chrome or any FIDO-compliant application on Windows, Mac OS or Linux.