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Enhanced Image Captcha - Stop bots from signing up! Details »»
Enhanced Image Captcha - Stop bots from signing up!
Version: 2.2, by steadicamop steadicamop is offline
Developer Last Online: Dec 2014 Show Printable Version Email this Page

Category: Miscellaneous Hacks - Version: 3.7.6 Rating:
Released: 06-06-2008 Last Update: 06-08-2008 Installs: 293
Uses Plugins Auto-Templates
Additional Files Translations  
No support by the author.

Title : Enhanced Image Captcha

Version : 2.2b

VB Versions : Currently working and tested on 3.8.4 (as of Dec 2014)

Coder : Andy Calderbank & Jason Williams

Purpose : Add extra Image Verification to the registration process, using an alternative system to the Captcha system.

The Enhanced Image Captcha system is a unique system using images versus text to stop spammers signing up to your forum. The script automatically detects images and uses the filename as the title, making adding new images extremely simple. To further improve security, the images are passed through a script which means that none of the images on the screen have file names - and cannot be associated to the question by title alone - and cannot be viewed by trying to access the images directly.

Please note, there is a .htaccess file within the images directory, to keep security tight, this must be kept, without it bots are able to scan the images and make a match, I understand not every server can utilist .htaccess but cannot get around this.

Important : This has been tested on 3.7 and 3.6.2 - as far as I know this should be backwards and forwards compatible.

My thanks go to all the guys who have helped with this, all the suggestions and feedback, all has been take on board and where necessary included in this new version - members in particular are : King Kovifor, Danny.VBT, Lynne and RCK.

Also thanks to ogameclub for the Turkish translated version.

I must thank Opserty too for their hard work in making me understand where I was going wrong!!

New features from original 1.11 release!!

Admin settable options:
  • Number of images to display
  • Path to image directory (so you can change if you prefer)
  • Resize image between 50% - 150% of original image
  • Number of images to display before a line break (see History)
  • Enable/Disable
Demo : http://www.steadiforum.net/register.php

I hope this is help to the VBulletin community as I know this is a growing problem. I don't fancy the thought of trawling through hundreds of new members deleting stupid usernames and spam posts.

Installation :
  1. Upload show.php to your forum root directory (or wherever register.php is).
  2. Upload the images/verification directory, this can be moved to the forum root or have the verification name changed, but needs updating in the Enhanced Image Captcha AdminCP options.
  3. Import Product - product-enhanced_image_captcha.xml
  4. Make sure that you check that the Images Path is correct in AdminCP -> VBulletin Options -> Enhanced Image Captcha.
  5. You can also select how many images and what size from the original you would prefer.
Upgrading:
  1. Import Product - product-enhanced_image_captcha.xml - overwrite if necessary.
  2. Set any options you need in AdminCP -> VBulletin Options -> Enhanced Image Captcha.
Upgrading from v1.xx :
  1. Remove the images/verification directory and all images inside.
  2. Uninstall the product - Enhanced Captcha Image Verification - important for phrase and template removal!
  3. Upload show.php to your forum root directory (or wherever register.php is).
  4. Upload the images/verification directory, this can be moved to the forum root or have the verification name changed, but needs updating in the Enhanced Image Captcha AdminCP options.
  5. Import Product - product-enhanced_image_captcha.xml - overwrite if necessary.
  6. Make sure that you check that the Images Path is correct in AdminCP -> VBulletin Options -> Enhanced Image Captcha.
  7. You can also select how many images and what size from the original you would prefer.
Requirements : GD Libraries installed

File uploads : 53 (including images)
Files to Import : 1
New Templates : 2
New Phrases : 15
Uses Hooks : 1
New Queries : 0

History :
v2.0b
  • Original Beta release
v2.1b
  • Added Enable/Disable Option
  • Also added Turkish Translated version
  • Added new image page
v2.2b
  • Bug Fix : Opera browsers, any number over around 8 images disappears over side of screen, added number of images before line break function to stop this happening
Don't forget you don't have to use the provided images - you can customise these to any you wish - I've used ones that are hopefully universal and everyone will recognise.

Show Your Support

  • This modification may not be copied, reproduced or published elsewhere without author's permission.

Comments
  #42  
Old 06-25-2008, 01:18 AM
joe.miklich joe.miklich is offline
 
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For some reason I can't get the images to show up correctly.

Just some X's in IE, and firefox is the same. images were uploaded to the default root/images/verification Permissions don't need to affect it.
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  #43  
Old 06-29-2008, 07:30 AM
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steadicamop steadicamop is offline
 
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Hmmm -- do you definately have GD libraries installed on your server?
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  #44  
Old 06-30-2008, 04:49 PM
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drsli drsli is offline
 
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Very useful mod! Many thanks for providing it.
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  #45  
Old 07-02-2008, 11:32 AM
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masterme masterme is offline
 
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Installed it on 3.6.5 (updated from the older mod because bots could come in) and works perfectly.

I added the Dutch version of this mod. Phrases and images translated, not the installationguide.
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  #46  
Old 07-02-2008, 06:11 PM
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steadicamop steadicamop is offline
 
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Glad to hear it's working, thanks also for the translation, if it's ok with you, when I do any updates I will release the Dutch version too?

Thanks again
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  #47  
Old 07-03-2008, 07:35 AM
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masterme masterme is offline
 
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Go ahead, make other people happy with it

But unfortunally the bots seem to get in anyway. I have set the number of pics high, but today another one succesfully registered on my board. They are easaly identified thanks to their names and date of birth (always 1-1-1980), but nonetheless the seem to get in anyway.
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  #48  
Old 07-05-2008, 02:33 PM
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indie2industry indie2industry is offline
 
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is there a way to implement this in the sendmessage.php file. I have the 3.6 version still installed on my 3.7.2 board (clicked installed on the older thread) and I currently have my boards messaging system turned off because bots like to send me e-mail too. LOL.
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  #49  
Old 07-07-2008, 04:10 PM
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steadicamop steadicamop is offline
 
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I was able to convert version 1 to work with the sendmessage script, when I get a spare 5 minutes I will knock up a quick conversion.

Jase
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  #50  
Old 07-17-2008, 08:13 AM
Kirauni Kirauni is offline
 
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Hi there!
I'm sorry for not replying earlier... I promised translating the product into German and I'm finally done. I attached the version to this posting.

However, I experienced some troubles with the product while using the Interent Explorer and my Testboard (Vbulletin 3.7.2)
It doesn't matter if I use the original English Addon or my German version of it.
The Problem is, that everything works fine with Firefox. But when I try to register using Internet Explorer the images are not displayed at all.
Just the little boxes with a red cross in them. I checked the poath to the images and it's correct. Do you have any idea what might have gone wrong?

I'm using Vbulletin 3.7.2 and Internet Explorer 7.0.5730.13 and as mentioned FireFox.

Please let me know if you need any further information
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  #51  
Old 07-17-2008, 08:16 AM
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indie2industry indie2industry is offline
 
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Quote:
Originally Posted by steadicamop View Post
I was able to convert version 1 to work with the sendmessage script, when I get a spare 5 minutes I will knock up a quick conversion.

Jase
sweeeeeeeeeeeeeeeeeeeeeeet


thanks man
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