Ask HN: Critique my landing page (https://www.gauthify.com)

I want to know if my landing page conveys what the product does to be ready for when I post on show hn and other places. Please check it out here: https://www.gauthify.com

Description (please visit after viewing site): GAuthify is a web app/api that allows you to easily add Google Authenticator, SMS, and Email two-factor authentication. Google Authenticator works on iPhone, Blackberry, Android and more using time based one time passwords. The email and SMS otp are single use codes that expire after their initial usage. I have provided the ruby, php and python libraries already to get started in very few lines of code.

How much of that description did you already know from seeing the landing page?