Title: Clef Two-Factor Authentication Author: Dana Ross Published: December 28, 2012 Last modified: May 24, 2017 --- Search plugins ![](https://s.w.org/plugins/geopattern-icon/wpclef_4ab6e4.svg) # wpclef * [Details](https://wordpress.org/plugins/wpclef/#description) * [Reviews](https://wordpress.org/plugins/wpclef/#reviews) * [Development](https://wordpress.org/plugins/wpclef/#developers) [Support](https://wordpress.org/support/plugin/wpclef/) ## Description This plugin has been closed as of January 30, 2021 and is not available for download. This closure is permanent. Reason: Author Request. ## Reviews ![](https://secure.gravatar.com/avatar/9e3f4cf871094a2b6eb54316732f114efd88cf65ef464e34bf082cb90641bbd5? s=60&d=retro&r=g) ### 󠀁[bad support – no customization allowed](https://wordpress.org/support/topic/bad-support-no-customization-allowed/)󠁿 [Masoud](https://profiles.wordpress.org/masoud1111/) March 3, 2017 hi. yes the app is good. (not awesome!) it does what it says! but no support at all! they said you can use it with shortcode. 1- i wanted to put it in my custom login . php there is no work for shortcode there! but they didn’t help me with a single code ! 2 – i’ve blocked back-end (wp-login/wp-admin/wp-…) for non admins. it get’s you to wp-… and there’s no way to change it! 3 – i used it in my sidebar as a widget. the button looks ok! but if you logout, and want to login again, then you will see there is no button. it will show you a form instead “it seems that you’ve logged in recently with this account … ” “log in again” and believe me, its css was a mess! ![](https://secure.gravatar.com/avatar/0834bbc8f633be70e8ea506846aa93626588edb8605217aafc645e4ba02e34d7? s=60&d=retro&r=g) ### 󠀁[Secure and good for password-challenged clients](https://wordpress.org/support/topic/secure-and-good-for-password-challenged-clients/)󠁿 [Steven Stern (sterndata)](https://profiles.wordpress.org/sterndata/) February 23, 2017 As I move sites to SSL, the need for an out of channel login for use on shared WiFi is somewhat reduced. The best thing is that Clef allows me make clients who cannot remember passwords happy. I show them how i just point my phone at the site and it’s magic! ![](https://secure.gravatar.com/avatar/8feba0307ec1e3e48b5142ade1cb780f4b7bb149da93e497ecb13920055b723d? s=60&d=retro&r=g) ### 󠀁[Login activities and remote logoff – love those features](https://wordpress.org/support/topic/login-activities-and-remote-logoff-love-those-features/)󠁿 [Dio Phung](https://profiles.wordpress.org/dio/) February 20, 2017 Very cool wavy effect and it just works. Now I have secure 2FA login mechanism for my personal Wordpress site. ![](https://secure.gravatar.com/avatar/b1e13c3da8ae04685f2bb96baebd5afd11323d915ca183f0f00cbd81a52f9c23? s=60&d=retro&r=g) ### 󠀁[support = 0](https://wordpress.org/support/topic/support-0/)󠁿 [MastroMicio](https://profiles.wordpress.org/mastromicio/) February 18, 2017 If the plugin works in your WP installation… fine, everyone is happy. If by any chance, you have a problem with Clef, their support is simply non-existing. You are on your own. Check the support page and see how many posts are unanswered. ![](https://secure.gravatar.com/avatar/afeba7434c535a9bc5b80edb96ee3665c919009dacd3e1fb719b2bc38adb3638? s=60&d=retro&r=g) ### 󠀁[absolutely will not work on shared hosting without throttling your CPU](https://wordpress.org/support/topic/absolutely-will-not-work-on-shared-hosting-without-throttling-your-cpu/)󠁿 [sumoyoshi](https://profiles.wordpress.org/singlemanstravel/) February 13, 2017 CPU load average 5%. Enable Clef, 2FA… CPU usage 30-40 % of the whole dedicated unit and receiving warning emails from hosting provider saying that its being throttled dont even bother. Plus people can still access the wp-login.php page anyway, infact I received more hits and attempted logins via wp-login.php when Clef was enabled than I have all day when it was not installed…. probably uses all the CPU because its showing that stupid wave to every single tom dick and harry that wants to visit the login page and try and get in ![](https://secure.gravatar.com/avatar/caf5129eadf891a81fd7899c5f404b816488ebec4db0eb78eed990d1b931a8d0? s=60&d=retro&r=g) ### 󠀁[hungry plugin](https://wordpress.org/support/topic/hungry-plugin/)󠁿 [schawki](https://profiles.wordpress.org/schawki/) February 4, 2017 It works great, except it seems that it is very hungry in terms of server resources. I end up with a 500 error too often when I activate Clef. I finally decided to stop using it. on a shared hosting, I think it’s better not using it. I will look for an alternative for now. [ Read all 113 reviews ](https://wordpress.org/support/plugin/wpclef/reviews/) ## Contributors & Developers “Clef Two-Factor Authentication” is open source software. The following people have contributed to this plugin. Contributors * [ Dana Ross ](https://profiles.wordpress.org/csixty4/) * [ Jesse Pollak ](https://profiles.wordpress.org/jessepollak/) * [ Andrew Russell ](https://profiles.wordpress.org/zrathustra/) * [ inthylight ](https://profiles.wordpress.org/inthylight/) “Clef Two-Factor Authentication” has been translated into 10 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/wpclef/contributors) for their contributions. [Translate “Clef Two-Factor Authentication” into your language.](https://translate.wordpress.org/projects/wp-plugins/wpclef) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/wpclef/), check out the [SVN repository](https://plugins.svn.wordpress.org/wpclef/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/wpclef/) by [RSS](https://plugins.trac.wordpress.org/log/wpclef/?limit=100&mode=stop_on_copy&format=rss). ## Meta * Version **2.6.4** * Last updated **8 years ago** * Active installations **N/A** * WordPress version ** 3.6 or higher ** * Tested up to **4.6.30** * Languages * [Croatian](https://hr.wordpress.org/plugins/wpclef/), [Dutch](https://nl.wordpress.org/plugins/wpclef/), [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/wpclef/), [English (Canada)](https://en-ca.wordpress.org/plugins/wpclef/), [English (US)](https://wordpress.org/plugins/wpclef/), [French (France)](https://fr.wordpress.org/plugins/wpclef/), [Greek](https://el.wordpress.org/plugins/wpclef/), [Japanese](https://ja.wordpress.org/plugins/wpclef/), [Russian](https://ru.wordpress.org/plugins/wpclef/), [Slovak](https://sk.wordpress.org/plugins/wpclef/), and [Spanish (Mexico)](https://es-mx.wordpress.org/plugins/wpclef/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/wpclef) * [Advanced View](https://wordpress.org/plugins/wpclef/advanced/)