This is a great plugin to enable something Wordpress should probably offer out of the box. With all the hits I see trying to login to my site, I feel safer knowing I have two-factor enabled!
My only request would be to be able to set a cookie to trust a given browser longer so I don't need to reauthenticate as often on my main laptop.
I love HOTP. I wish they made it longer and added characters and letters in between. I read they can hack the 2FA app six digits in less than a day. With these add-ons, it would take years.
I surely want to acknowledge my gratitude to this plugin's authors. Their work is to be measured by the effect it has on protecting WP sites and how effortlessly it works. Fricton-free and effective. Just great!