Comment on Multi-Factor and Two-Factor Authentication For WordPress – Shield by Mike.
I use the Google Authenticator Plugin, one thing to note is that on old android phones, there is a glitch that makes the time sequence out of whack, and you don’t have enough time to log in. So If you are planning on implementing any of these plugins in your website, make sure you have a backup done before implementation, so you can recover your account if the plugin locks you out.
