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reCAPTCHA!vB - Stop spam. Read books. Details »
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reCAPTCHA!vB - Stop spam. Read books.
Developer Last Online: Feb 2012 
This modification is in the archives.
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:
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:
Currently Known Bugs:
* 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
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About Developer
Not Supported 
Uses Plugins|
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| 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 00:44 |
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#2
09 Jul 2007, 22:20
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amazingly brilliant, as usual Magnus !!!
/me send some love ! (my wife will kill me if she knows!) edit: ah, now it is good, the file !!! remember to tell to register to get a API key: http://recaptcha.net FREE No members have liked this post.
Last edited by nexialys; 09 Jul 2007 at 22:33. 
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#3
09 Jul 2007, 22:47
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Woops! Forgot to include an aesthetic template edit. Not having it won't cause any functionality issues, you simply won't be able to change themes.
In order to upgrade, simply re-download and import the latest XML, overwriting your existing one. That's it!
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#4
09 Jul 2007, 22:54
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This is great!!!
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#5
09 Jul 2007, 22:55
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Glad you like.
I read about this in the latest Wired magazine, and I just had to put it into vBulletin. 
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#6
10 Jul 2007, 00:12
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very creative putting something like this to good use
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Gamerz Needs - For All Your Gaming Needs! No members have liked this post.
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#7
10 Jul 2007, 00:34
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Suggest this as a default mod built-in to vb v4.0 =]
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#8
10 Jul 2007, 03:47
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vb4? LOL
nice hack! No members have liked this post.
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#9
10 Jul 2007, 09:59
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Excellent! Thanks a bunch!
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#10
10 Jul 2007, 14:31
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I've gone ahead and uploaded a register.patch file, which will allow you to utilize the unix patch system to make the necessary file edits automatically. Simply follow the instructions in the original post if you haven't already made manual file edits.
Be sure to backup your original register.php! If you ever wish to return to the original CAPTCHA, all you need to do is simply overwrite register.php with the backup you made then uninstall the product. That's it!
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#11
10 Jul 2007, 17:57
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Originally Posted by magnus
Could you please explain how the register.patch file works? I read the instructions you posted but I'm not quite sure what it does. Oh and does this work with 3.6.5?
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#12
10 Jul 2007, 18:07
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Originally Posted by Smoothie
The file register.patch is a GNU patch file. It has the location offsets and changes necessary for the modification to work. Rather than having to edit the file manually, this patch file will do it automatically. If you download the patch file and open it in notepad, you'll get a better understanding of what it's doing. It's basically an automated 'search and replace'.
If the 3.6.5 register.php has a different offset, then the patch file will fail, so you'll need to make the file edits manually in that case. Either way, none of the changes are irreversable. If something goes awry, you simply overwrite register.php with your backup and you're off and running again. As long as you have a backup of register.php, there's no risk.
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#13
10 Jul 2007, 22:13
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One more question. How would this mod be different/better than say a few of the others posted here such as the no spam which has a set of alternating questions a user must answer correctly to register on your site?
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#14
11 Jul 2007, 11:50
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Originally Posted by Smoothie
Considering I'm not familiar with the specifics of the modification you're speaking about I can only speculate as to it's functionality.
The benefit to reCAPTCHA is it's something any human can answer. Questions, regardless of how easy they are, may be interpreted wrong due to language barriers or possibly even mental capacity. The goal of a CAPTCHA isn't to test the users knowledge, it's to simply confirm they are human. One of the added benefits of reCAPTCHA is the fact it takes something as trivial as registering on a forum and uses those "human processes" to do something productive. Helping to translate words that even the best OCR software in the world cannot translate is helping to advance the digitizing of books printed before the digital age. Not to mention, reCAPTCHA uses 2 words to authenticate humans. One of the words is one that has been proven to be previously untranslated by bots. That's a pretty good security measure, if you ask me.
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#15
11 Jul 2007, 15:34
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@magnus
Very nice hack. One question, I am confused to where I put the code: # patch -b register.php < register.patch Does this go in the patch file, register.php or else where?
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