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reCAPTCHA!vB - Stop spam. Read books. Details »
reCAPTCHA!vB - Stop spam. Read books.
Mod Version: 1.1.0, by magnus (Member) magnus is offline
Developer Last Online: Feb 2012 I like it Show Printable Version Email this Page

This modification is in the archives.
vB Version: 3.6.7 Rating: (24 votes - 4.88 average) Installs: 205
Released: 09 Jul 2007 Last Update: 27 Feb 2008 Downloads: 2197
Not Supported Uses Plugins Auto-Template Code Changes Additional Files External Content  

THIS MODIFICATION SHOULD NOT BE USED WITH VBULLETIN 3.7+ AS IT IS A DEFAULT FEATURE.

Keywords: reCAPTCHA, CAPTCHA, spam, register

Description:
This modification will replaced the default vBulletin registration CAPTCHA with the newer, more advanced reCAPTCHA.

What is CAPTCHA/reCAPTCHA?:
A CAPTCHA is a program that can tell whether its user is a human or a computer. You've probably seen them colorful images with distorted text at the bottom of Web registration forms. CAPTCHAs are used by many websites to prevent abuse from "bots," or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.

About 60 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day. What if we could make positive use of this human effort? reCAPTCHA does exactly that by channeling the effort spent solving CAPTCHAs online into "reading" books.

To archive human knowledge and to make information more accessible to the world, multiple projects are currently digitizing physical books that were written before the computer age. The book pages are being photographically scanned, and then, to make them searchable, transformed into text using "Optical Character Recognition" (OCR). The transformation into text is useful because scanning a book produces images, which are difficult to store on small devices, expensive to download, and cannot be searched. The problem is that OCR is not perfect.



reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly.

But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct.

Currently, we are helping to digitize books from the Internet Archive.



Installation:
  1. Download and unzip the recaptcha101.zip archive.
  2. Upload the functions_recaptcha.php to your /includes/ directory.
  3. Import the product-recaptcha.xml via the Product Manager.
  4. Obtain a FREE public and private reCAPTCHA key here.
  5. Make any desired configuration changes via AdminCP > vBulletin Options > reCAPTCHA Options
  6. Make a backup of your register.php file, located in your forum root.
  7. Perform ONE (1) of the following methods:
    • Method A:
      • Download the register-patch.zip archive, extract, then upload the register.patch file to your forum root, then apply the patch:

        *Note: Please note that this method requires a basic understanding of UNIX shell commands and requires shell access to your host. If you do not have either of these or you are unsure how to use GNU patch, I highly suggest performing Method B instead)


        Block Disabled:      (Update License Status)  
        Suspended or Unlicensed Members Cannot View Code.

        This will perform the file edits automatically. Once finished, you may delete the register.patch file.
    • Method B:
      Perform the following simple file edits:
      • IN register.php:
        1. FIND:

          Block Disabled:      (Update License Status)  
          Suspended or Unlicensed Members Cannot View Code.

          REPLACE WITH:

          Block Disabled:      (Update License Status)  
          Suspended or Unlicensed Members Cannot View Code.

        2. FIND AND REMOVE:

          Block Disabled:      (Update License Status)  
          Suspended or Unlicensed Members Cannot View Code.

        3. FIND:

          Block Disabled:      (Update License Status)  
          Suspended or Unlicensed Members Cannot View Code.

          REPLACE WITH:

          Block Disabled:      (Update License Status)  
          Suspended or Unlicensed Members Cannot View Code.


NOTE: YOU MAY ALSO REPLACE THE CAPTCHA DISPLAYED TO GUESTS WHEN USING THE "CONTACT US" FORM BY FOLLOWING THE INSTRUCTIONS HERE.



Tips, tricks and modifications:


Comments:
As with all my hacks, this modification is provided free of charge. However, if you find this product useful and have money burning a hole in your pocket, feel free to make a small donation, I won't mind.. really.

Version History:
  • 1.0.0 - Initial release, here's to hoping...
  • 1.0.1 - Woops! Forgot to include a aesthetic template edit in the original release. All is well, simply redownload and overwrite the XML. That's it!
  • 1.1.0 - Added alternate language support. Now various reCAPTCHA tags and text will be displayed in your selected language. Also added a fieldset to the automatic template edits around the display block for a more uniform look (thanks DOCTOR DAN!).

Currently Known Bugs:
  • None

* Please note that this modification was developed on a forum with a userbase of 1 (myself). I've tested it for basic functionality but I cannot guarantee functionality or behavior on your forum. So, please -- make backups before installing this product!

Download Now

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

Screenshots

Click image for larger version

Name:	captchaHomePage.gif
Views:	1203
Size:	8.3 KB
ID:	66750   Click image for larger version

Name:	recaptchaadmin.jpg
Views:	972
Size:	81.8 KB
ID:	66792   Click image for larger version

Name:	recaptchavb.jpg
Views:	835
Size:	52.1 KB
ID:	76450  

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  • If you like this modification support the author by donating.
  • This modification may not be copied, reproduced or published elsewhere without author's permission.
Similar Mod
Mod Developer Type Replies Last Post
Miscellaneous Hacks reCAPTCHA!vB - MailHide : Tired of spam? Fight back. magnus vBulletin 3.6 Add-ons 7 20 Jul 2008 01:44

  #181  
Old 08 Jul 2011, 19:29
neodesc neodesc is offline
 
Join Date: Jun 2006
Hello,

I've been using this mod for a quite some time now and it used to get the job done until a couple of weeks ago stopped working properly.

Here's what's going on. If you pass the recaptcha everthing goes smoothly. However if you enter the wrong text you will get this message instead of a new recaptcha

An internal error occurred: 4A792ED1857F0.AB4008B.4D7DB63
Appreciate any help
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  #182  
Old 08 Jul 2011, 21:13
Sworm Sworm is offline
 
Join Date: Feb 2008
Use the Custom Question and you'll not receiv spammers anymore
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  #183  
Old 29 Sep 2011, 22:10
cupra cupra is offline
 
Join Date: Dec 2006
Originally Posted by neodesc View Post
Hello,

I've been using this mod for a quite some time now and it used to get the job done until a couple of weeks ago stopped working properly.

Here's what's going on. If you pass the recaptcha everthing goes smoothly. However if you enter the wrong text you will get this message instead of a new recaptcha



Appreciate any help
same here, need some help with that issue...
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  #184  
Old 07 Oct 2011, 13:31
neodesc neodesc is offline
 
Join Date: Jun 2006
Originally Posted by cupra View Post
same here, need some help with that issue...
in your register.php find

Block Disabled:      (Update License Status)  
Suspended or Unlicensed Members Cannot View Code.

replace it with

Block Disabled:      (Update License Status)  
Suspended or Unlicensed Members Cannot View Code.

this fixes it.
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  #185  
Old 09 Oct 2011, 10:21
cupra cupra is offline
 
Join Date: Dec 2006
tnx !
are you sure? i cant find recaptcha_get_html($publickey, $error); on the register.php
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  #186  
Old 12 Oct 2011, 01:48
Zachery's Avatar
Zachery Zachery is offline
 
Join Date: Jul 2002
Real name: Zachery Woods
What version of vBulletin are you using?
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Looking for ImpEx?
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  #187  
Old 14 Oct 2011, 10:29
cupra cupra is offline
 
Join Date: Dec 2006
Originally Posted by Zachery View Post
What version of vBulletin are you using?
tnx - im using 3.6.5
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  #188  
Old 13 Jan 2012, 23:36
arossphoto arossphoto is offline
 
Join Date: Jan 2006
I've tried installing this in 3.6.4, but like some others here I'm only getting an empty box with the title "Image Verification". I checked Image Settings and it is set to GD.

Any suggestions would be much appreciated.
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  #189  
Old 10 Sep 2012, 10:55
Eslob Eslob is offline
 
Join Date: May 2010
Great Addon ,,, thanks ..
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Eslob Forums, base of information & discussion..
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