In my previous blog post I demonstrated how to send 2 Factor Authentication security codes via email in the new ASP.NET Identity 2.0 Beta 1. In this blog post I will demonstrate how to send the 2 Factor security codes via SMS by using the Twilio API. This blog post will build on the previous one, so if anything in this post is unclear please refer to that blog post first
A while ago I was looking at doing a blog post about 2 Factor authentication in ASP.NET MVC using Google Authenticator. I then became aware that it was on the roadmap for the ASP.NET Identity team to add to ASP.NET Identity 2.0. Well, ASP.NET Identity 2.0 Beta 1 is now available with 2 Factor Authentication, so in this blog post I will give you a quick overview on how it works and how to implement an email provider for the 2 Factor Authentication.