title: google authenticator with asp.net core
body: <p>Are there any sample implementation for google authenticator as two factor authentication implementation in addition to sms and email? </p>
  
  <p>Found one sample.
  <a href="http://www.jerriepelser.com/blog/using-google-authenticator-asp-net-identity/" rel="noreferrer">Sample Google Authenticator using asp.net</a></p>
  
  <p>But there are lots of changes while using it with asp.net core.</p>