This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
What does it do?¶
This extension is an authentication service for TYPO3 which extends the frontend and backend login process by strong two-factor authentication.
The two-factor authentication is provided by a TYPO3 users username and password combined with a OTP (one time password) which is generated by a YubiKey (a physical USB-key)
A YubiKey enabled user has to enter his username, password and a OTP to login to the TYPO3 backend and/or frontend.
More information about the YubiKey, Yubico and the YubiCloud OTP validation service can be found at http://www.yubico.com