If you want to improve your site but hate to pay for a two-factor authentication, then Rublon is a free service that will let you do that. Rublon offers a two-factor authentication login process for your WordPress blog or website.
The two-factor authentication uses your smartphone to scan for the QR code in the login process. So in case your password gets stolen, the hacker won’t have access to your login unless the culprit has access to your phone as well.
This is a useful authentication to people who gets hacked often. Using such authentication, you can add and remove trusted device to have access to your site. If it’s not authenticated, a user will have to authenticate the login using a smartphone.
Sounds like a useful plugin for your site, but how does it work? Read the rest of the review to find out.
Read it here: http://wplift.com/rublon-review