YubiKey 4C is a USB device that you use in combination with your username/password to prove your identity. With a simple touch, YubiKey 4C protects access to computers, networks, and online services. Keep one on your keychain with your home keys, and a second backup key in a safe place at home.
FIDO U2F, smart card (PIV), Yubico OTP, Code Signing, OpenPGP, OATH-TOTP, OATH-HOTP, and Challenge-Response. We offer free and open source tools to configure the YubiKey yourself.
No more reaching for your smartphone to re-type passcodes that you receive via SMS or from an authenticator app. Just plug in your YubiKey, tap, and it does the rest for you.
Use it with popular services like Facebook, Gmail, GitHub, Dropbox, Dashlane, LastPass, Salesforce, Duo, Docker, Centrify, and hundreds more. Configurable for computer login (Windows, Mac, Linux). Follow the intructions that each service provides, to register your YubiKey.