Dual connector with support for USB-C and Lightning
UNIFIED SOLUTION - A key that works across desktops and mobile devices
SIMPLE - Just insert into USB-C or Lightning port and tap the gold contact
DURABLE - Fiberglass reinforced bodies protect key from everyday life
PORTABLE - Fit the YubiKey on a keyring and carry anywhere you go
COMPATIBLE - YubiKey 5Ci, as part of the YubiKey 5 Series, works with leading operating systems and web services

YubiKey 5Ci is the first of its kind.

Product Description

The YubiKey 5Ci combines hardware-based authentication and public key cryptography to eliminate account takeovers. With support for both the Lightning port and USB-C, all on one single multi-protocol device, the YubiKey 5Ci offers a unified secure authentication solution for modern devices supporting USB-C across Android, Linux, and Windows, as well as across all Apple devices such as Macs, iPhones and iPads. Simply insert either connector to the device of your choice and experience YubiKey authentication that’s four times faster than typing in a One Time Passcode. Register only once on any iOS device and get recognized on any other Apple device of your choice. And no battery or network connectivity required, so the YubiKey 5Ci is always on and accessible for authentication. The YubiKey 5Ci also delivers secure login to macOS, Android, Windows, ChromeOS and much more.

• Secure your login and protect your account with hundreds of services like LastPass, Dashlane, 1Password and others.
• 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.
• Register easily 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.
• Use 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 5Ci is FIDO and FIDO2 certified. It works with Google Chrome or any FIDO-compliant application on Windows, macOS or Linux and with applications that provide FIDO, FIDO2, or one-time-password (OTP) support and through Chrome, Firefox, or Edge browsers.

Specifications