Protect your online accounts against unauthorized access by using 2 factor authentication with the Yubico YubiKey 5 NFC security key. Eliminates account takeovers and delivers strong phishing defense. Enables secure web and mobile app login across all major operating systems such as iOS, Android, Windows 10, and Linux, and across all major browsers. Provides strong passwordless, phishing resistant strong two-factor and multi-factor authentication. Supports WebAuthn/FIDO2, FIDO U2F, OTP and Smart Card capabilities.