[ Thanks to Falko Timme< for this link. ]
“This howto will guide you to set up a LinOTP
standalone one time password authentication backend on your Linux
machine. This enables you to add two factor authentication with one
time passwords to your desktop login.“LinOTP is a modular OTP (one time password) solution, that
supports many different OTP tokens. LinOTP is written in python,
based on pylons and apache. It comes as open source licensed under
the AGPLv3.