The Yubico YubiKey 5Ci is the first multi-protocol hardware authenticator with dual connectors for Lighting and USB-C ports. 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.