Authy makes it easy to integrate two-factor authentication into your existing Laravel application. It's user-end implementation is versitile, offering support for both smart-phones and standard phones. Furthermore, implmentation with its API is easy and seamless. Finally, its analytics and data tracking can you provide insights into your users and how they interact with your application's authentication system. This tutorial assumes that you have an Authy developer account (which can be created here ), an application (either testing or production), and your application's API key.

http://blog.enge.me/post/installing-two-factor-authentication-with-authy