Plugin Reviews

Clef Two-Factor Authentication

Modern two-factor that people love to use: strong authentication without passwords or tokens; single sign on/off; magical user experience.


70 reviews
Average Rating
4.8 out of 5 stars
Peace of Mind!
By , for WP 4.2.2

I have/had a few technical issues with Clef but to be honest you can't put a price on the peace of mind this plugin gives you. I have a nightmare of a shared host where users would hack my site via backdoor hacks, scripts, and programs. But since I got Clef never again, I can actually work on my website without worrying if my work will be gone the next day.

I recently (a little over a month :P ) also received a nice pair of stickers from them, I guess after you have so many emails back and forth fixing issues, they felt the need to send me gifts, hehe.

I wish them luck and hope they keep on growing with their product.

Thanks(for one less problem to think about at night)!

Locked out - Not Impressed
By ,

I have been using this product for a while and have been happy with, that is until I cam to change my phone and clear down the other one before logging in on the new one.

It didn't occur to me that the support for something as critical as this would be so poor!

I am now in a situation where I cannot log into a site for nearly 8 hours and worse it has locked me out for another 24 hours.

I realise these go wrong but making the product well and simple to use and us reliant upon it is begging is both good but also for trouble especially when the support system isn't there.

There are a lot of people using WordPress and all it needs is this sort of bad publicity and people will walk from this product like a bad smell.

Hopefully someone will resolve this fast


Has been sorted now and I am a happy bunny shame about the time delay but that's the global market I guess. The support when it happened was very good and precise.

Product as I said at first is good I now know more about it and can recommend it

This Plugin Is Amazing
By , for WP 4.2.2

Nothing to say, this plugin is amazing and i recommend it.

Excellent Two Factor Authentication
By , for WP 4.2.2

My staff and I use it on all our sites. No worries about passwords, which I used to change on a monthly basis. That was really successful - you should have seen the litter of post-em notes on the 5th of every month! Now, thanks to CLEF, we are no longer keeping 3M in business.

Works fine, every time, from wherever Chrome is sold. The wave has helped me wave goodbye to a peck of trouble.

Muito BOM
By , for WP 4.2.1

Uso no meu site e tem me fornecido muita facilidade e segurança.
Parabéns aos desenvolvedores.

Serious Hardware and Security Issues
By , for WP 4.2.1

I love the concept enough that we decided to bake this as a MU-Plugin in our installs last week. Unfortunately we discovered two serious issues over the last two days that has caused us to revert from using the plugin with WP.

The issues have been raised on the development site:

Issue #208: CAUTION: Clef Wave May Cause CPU Burnout
Issue #209: Security: Session Will Not Timeout When Machine is In Standby

We haven't found the same problems using Clef on other web technologies, just with this WP plugin.

I was only going to give a one-star because of the severity of these two issues but there is potential to fixing them and possibly becoming a standard login authentication module for WP. However, If the developer fixes the issue in a reasonable amount of time, I will revisit it for more testing and change the star-rating accordingly.

Simply Fantastic
By ,

Simply fantastic - not only does it make your site look cool, it also offers complete no-nonsense security. Two factor authentication is rapidly becoming the defacto standard owing to APT and Cyber Security requirements as a whole.

Keep this up guys - one of the best security plugins there is.

So Simple
By , for WP 4.2.1

Besides looking freakin awesome this is super simple and helps when managing a lot of different installs. If you authorized on one install the rest will just let you click a button to get in until the app expires on the phone. Simple awesome!

Fact and secure
By ,

I don't care about the admin bugs anymore i use Clef and it's very cool
When we have a login/passwd bug you can't login because we have a safe env.

Very simple and nice
By , for WP 4.2

This thing just works, I like it.

You must log in to submit a review. You can also log in or register using the form near the top of this page.