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KeyCAPTCHA - Interactive CAPTCHA with Social Features Details »
KeyCAPTCHA - Interactive CAPTCHA with Social Features
Mod Version: 3.7.0, by KeyCAPTCHA (Coder) KeyCAPTCHA is offline
Developer Last Online: Dec 2020 I like it Show Printable Version Email this Page

This modification is in the archives.
vB Version: 3.7.x Rating: (4 votes - 4.75 average) Installs: 34
Released: 17 Jan 2011 Last Update: 31 Aug 2012 Downloads: 165
Not Supported DB Changes Uses Plugins Additional Files External Content  

We always thanked, we thank, and we shall always thank those who clicked Mark as Installed or bothered to write ANY feedback about KeyCAPTCHA

KeyCAPTCHA - Interactive CAPTCHA
Unlike many other captchas, it does not require any text typing.

Social Features:
You may support charity funds by enabling social advertising in KeyCAPTCHA. Also you can earn money by specifying social and commercial advertising shares in KeyCAPTCHA on your website.

Free Variants of Using KeyCAPTCHA:
  1. Anti-spam protection. Social advertising. Monetization through commercial ads.
  2. Anti-spam protection. Monetization through commercial ads.
  3. Anti-spam protection. Social advertising.
  4. Anti-spam protection without any ads.
Integration with vBulletin Human Verified Actions:
  • Register
  • Post
  • Contact Us
  • Search
KeyCAPTCHA Unique Technologies
  • Instead of guessing symbols, our CAPTCHA offers visitors to complete an easy interactive task.
  • If KeyCAPTCHA hasn't been solved correctly, page refreshing doesn't take place that allows the user not to fill in the form repeatedly. It occurs since there is an initial checkup of CAPTCHAs in the KeyCAPTCHA servers before sending a filled-in form to the protected web server.
  • Our CAPTCHA also can be used even if your hosting provider blocks all outgoing connections.
Effective Anti-Spam Protection
  • The geo-cluster is used to operate KeyCAPTCHA service. Our geo-cluster includes the servers located in diverse European data centers. Some servers are in the special DDoS stable data centers in Switzerland to ensure trouble-free 24x7x365 mode service operation.
  • KeyCAPTCHA blocks spammers using anonymizers or anonymous HTPP proxies to distribute a hand spam.
  • There is no info of correct CAPTCHA solution in the visitor's browser.
  • CAPTCHA verification is processed by the KeyCAPTCHA servers.
  • Data transferring between your web server, the visitor's browser and the KeyCAPTCHA server is protected by a digital signature.
  • 112 to 165 bit variable length password is used to generate a digital signature.
  • KeyCAPTCHA is a code executable in the visitor's browser. It is not a static image as used in typical CAPTCHAs.
  • Having received our CAPTCHA, it's virtually impossible to transfer it to third parties in order to run any task what spammers also do bypassing typical CAPTCHAs.
  • Probability of guessing the answer by submitting a random solution is 1 to 30,000,000.
  • KeyCAPTCHA-used images are transferred encryptedly.

KeyCAPTCHA supports two operating modes: Flash and HTML5. The KeyCAPTCHA HTML5 mode is used in most modern browsers, such as Mozilla FireFox, Google Chrome, Safari, and also used in iPhone and iPad. The Flash mode has been developed to be used in Internet Explorer and Opera. While loading, KeyCAPTCHA identifies its operating mode depending on the visitor's browser.

KeyCAPTCHA Affiliate Program
KeyCAPTCHA Affiliate Program allows publishers as well as any Internet user to collect incomes. For more information on The KeyCAPTCHA Affiliate Program, go to Our CAPTCHA Blog.

  1. Register on and log-in to our site (;
  2. Add your site URL to a Site list;
  3. Follow the CAPTCHA installation instructions in our Wizard.

If you use KeyCAPTCHA please click "Mark as Installed" in the right menu on this page.

Download Now

Only licensed members can download files, Click Here for more information.


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  • To receive notifications regarding updates -> Click to Mark as Installed.
  • This modification may not be copied, reproduced or published elsewhere without author's permission.
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Old 17 Jan 2011, 17:03
lazydesis lazydesis is offline
Join Date: Sep 2006
wow thats very innovative ... thanks

Can this be done for vb4 please.
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Old 18 Jan 2011, 03:21
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Hi, lazidesis,
thank you for your interest.
We added announcement of our KeyCAPTCHA in "vBulletin 4.x Add-ons" forum.

Recently, and before this announcement, we made this compatible with any of the versions of vBulletin from 3.7 to 4.x. We thourougly tested it in all. Before, we had separate plugins for 3.7-3.8.5 and 4.x versions.

One can download and install KeyCAPTCHA plugin for VBulletin (now for versions 3.7-4x, ) directly from our site . It is free but one should register there to find download and instructions specific per each of many different supported CMSs

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Old 25 Jan 2011, 13:15
mrvanity mrvanity is offline
Join Date: Dec 2009
I've installed it in 3.7.3 and after the terms agreement page, i get a blank page. Switching back to recaptcha works just fine.
What could be the problem?
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Old 27 Jan 2011, 10:40
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Originally Posted by mrvanity View Post
I've installed it in 3.7.3 and after the terms agreement page, i get a blank page. Switching back to recaptcha works just fine.
What could be the problem?
Hi, mrvanity,
thank you for your interest and time to try out our plugin!

Please open ticket on site to our support team by clicking on the "Support Team" tab
(at upper right corner of site's webpage)
then the "Add New Ticket" link.

The "Support Team" tab is visible for logged-in visitors only.
(we assume that you have already registered at our site
as you were trying to install plugin and respectively should have followed the installation instructions stipulating this).

This (opening a ticket) will permit us to communicate with you with maxima more efficiently and promptly
as we will be able to identify already entered by you related data.

Note that our team also installs our plugin free of charge if you agree to temporarily share with us your administrator access to your website (hosting share).

Waiting a ticket from you now,
KeyCAPTCHA Support Team
Have you opened a ticket, we believe, your issue would have already been resolved in a very short period of time after its submission.
Anyway, sorry for this delay to answer you.

Last edited by KeyCAPTCHA; 02 Feb 2011 at 14:15.
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Old 27 Jan 2011, 12:42
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Anti-spam your public Email by KeyCAPTCHA without plugin

We have launched a new Email protectiion service which is not yet reflected on our website but it is fully functional and tested:
You may publish your Email adresses publicly (in chats, forums, twitter, facebook, etc.) as a protected from web scraper/harvesters link.
We believe that it can be also used instead of Contact US form or even by blogger that do not have access to plugin installations.

As an example, you can try out now by clicking the link: corresponding to
  • [email protected]
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Old 25 Feb 2011, 16:22
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
KeyCAPTCHA in Spanish, Norwegian, Portuguese(Brazilian), Frenh, Swedish, German

We have added server-side support (feed) in Spanish and in a dozen of other languages.

Since we have the same plug-in for all versions of vBulletin, please see a more detailed announcement in the "vBulletin 4.x Add-ons" forum
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Old 02 Mar 2011, 14:19
bailradio bailradio is offline
Join Date: Feb 2007
Just what i needed, Used this on a PHPBB forum
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Old 02 Mar 2011, 16:30
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Originally Posted by bailradio View Post
Just what i needed, Used this on a PHPBB forum
Hello, bailradio,
this is spectacular!

Could we ask for your time to post a couple of words (or less)
on official phpBB KeyCAPTCHA contribution
where we do not have a single positive feedback
but only posts with (transient technical support) problems?

We were kind of waiting for such feedback there for quite a time,
but it is not happening there

We would really appreciate your time and help!
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Old 02 Mar 2011, 19:05
Qima Qima is offline
Join Date: Feb 2011
Real name: Zineddine
very nice moD . thanks
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Old 03 Mar 2011, 10:33
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Originally Posted by Qima View Post
very nice moD . thanks
thanks for your feedback.
We need it
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Old 03 Apr 2011, 23:44
inciarco's Avatar
inciarco inciarco is offline
Join Date: Mar 2007

I Share The Following Tips to KeyCAPTCHA Users to Stop and Control SPAMMERS, TROLLS and LEECHERS, From Registering in Your vBulletin Boards, I Like to Post it on All the KEYCAPTCHA Mod Topics because I Know this Will Benefit All vBulletin Board Administrators:

Originally Posted by inciarco View Post
Originally Posted by Morrus View Post
I hate to be the bearer of bad news, but spam on our forum and increased tenfold since installing KeyCAPTCHA. If anything, it seems less secure than the reCAPTCHA or the Q&A methods (both of which are far from perfect, but seem to reduce spam more than KeyCAPTCHA does). I've been deleting spam posts and banning spammers all day for a couple of days now - hundreds of them - since installing this.
I DISAGREE With You, Morrus.

As the Matter of FACT, KeyCAPTCHA STOPS 100% of SPAM BOTS, because SPAM BOTS Can't Solve the PUZZLES.

Is 100% Impossible to STOP SPAMMERS (Persons) From Registering, (NO SYSTEM CAN Simply Because Humans Find Ways to Try and Joke Any Registration System), but You Can Implemment and Configure Other Systems to Reduce That From Happening:

1. KEYCAPTCHA (Stops 100% of SPAM BOTS), So USE IT.

2. Create and Set "User Profile Fields", and Force Users to Write Answers in Them, so that They Have to Write Coherent Answers, (SPAMMERS, TROLLS, and LEECHERS Will Provide Wrong Answers and those You'll BAN For doing that because those are SPAMMERS).

3. Use the "COPPA Registration System", so that No Person Can Write ANY Birth Date, and Also to NOT Accept Registrations Under 13 Years Old.

4. Set To YES the "Moderate New Members" Option on the "User Registration Options", so that You Can Review the Answers that Users Make to the "User Profile Fields" Before Accepting their Accounts. Give Yourself the Opportunity to BAN TROLLS and SPAMMERS that Write TRASH on those Fields, they for Sure Will Be SPAMMERS.

5. Set "Follow Forum Moderation Rules If no, posts are always placed into moderation queue" on "Post / Thread Permissions" as "NO", for Usergroups Not Approved ("Not Activated" and "Pending Approval"), so that Every message They Post is Moderated, and that Way NO SPAM from HUMAN SPAMMERS or TROLLS is Viewed (can be Posted but NO ONE WILL SEE IT), and that way if they Post SPAM You BAN THEM and Delete their TRASH Posts. NEVER Allow those Usergroups to Create New Threads.

6. Use Also an Additional System as "vMail - Verify Mail before registration", so that No User Can Register Without Validating His/Her Contact E-mail Address.

7. Use Also another Additional System as "NoSpam! for vBulletin 3.7", so that Users Have to Answer a Validation Question (like a Mathematical Question or whatever related to Your Web Site), so that No User Can Register Without Knowing the Answer to that Question.

8. There are other thing More to Tell, but with the Previous Ones You'll STOP SPAMMERS, TROLLS, and LEECHERS, so much, that You'll Reduce their Registrations and Keep Them Under Control. Also Many Users Will be Annoyed by that, but You Have to Choose if You Want QUALITY Users Registering or Just QUANTITY (The Quantity don't Participate, they're Just LEECHERS).

I 100% Recommend KEYCAPTCHA, Because is a Beautiful AntiSPAM-BOT System, and Also Provides a PUZZLE System that Only Humans Can Solve.

Thank You Very Much KEYCAPTCHA.

My Best Regards.

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Old 04 Apr 2011, 23:31
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
I just wanted to remind all that here is the same plugin as for vBulletin 4.x
backward compatible with previous versions
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Old 11 Apr 2011, 09:27
KeyCAPTCHA's Avatar
KeyCAPTCHA KeyCAPTCHA is offline
Join Date: Nov 2010
Real name: Maxim
Changes in new KeyCAPTCHA plugin version from 04/16/2011 for vBulletin 3.7-4.x
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Old 02 May 2011, 22:11
RaMarcus RaMarcus is offline
Join Date: Jun 2006
Thanks for this, we've got a bot problem at the moment and will give this a try if my 20 random questions don't stop them. Is there anyway of using this as well as the Q&A option?
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