Took me a moment to realize this was another two factor provider similar to Google Authenticator but only commercial in nature: https://www.authy.com/pricing ht

Took me a moment to realize this was another two factor provider similar to Google Authenticator but only commercial in nature: https://www.authy.com/pricing https://www.authy.com/pricing They have a free level for 500 authentications a month which might work for a single user but I could see that used up with a few active contributors posting often. There is already a nice Wordpress plugin that adds Google Authenticator: http://henrik.schack.dk/google-authenticator-for-wordpress/ http://henrik.schack.dk/google-authenticator-for-wordpress/