问题
I am looking for API and Example that can help me to build two-factor authentication of my website for the server as well as the front side. I want to build something like this, http://ngtfaweb.azurewebsites.net/#/home
回答1:
You could use Passport Js if you are using node js as backend or you could use services like Auth0 which are one step solution for multiple Oauth.
来源：https://stackoverflow.com/questions/51552680/google-2-factor-authentication-with-angular-and-nodejs