YubiKey 5Ci

Newest addition to the YubiKey 5 Series, with a future-proofed, multi-protocol 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.

Increased mobile app security with USB-C and Lightning support, in an all-in-one key
Single unified solution delivers reliable, hardware-based authentication for apps on Macs, iPhones and iPads
Strong security for mobile apps on Android
Secures employee-facing, in-house mobile apps (e.g. Retail Point-of-Sale apps)
Secures customer-facing mobile apps such as mobile banking apps, retail apps etc.

Streamline authentication with a portable root of trust
Fast and easy user registration to websites and applications
Rapid onboarding of a new device and establishing it as a trusted device
Fast account recovery in the case of a lost or stolen device
Experience high security with step-up authentication.