The Arcive of Official vBulletin Modifications Site.It is not a VB3 engine, just a parsed copy! |
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reCAPTCHA!vB Details »»
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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. [hr]-[/hr] Installation:
NOTE: YOU MAY ALSO REPLACE THE CAPTCHA DISPLAYED TO GUESTS WHEN USING THE "CONTACT US" FORM BY FOLLOWING THE INSTRUCTIONS HERE. [hr]-[/hr] Tips, tricks and modifications:
[hr]-[/hr] 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! Show Your Support
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About Developer
Uses Plugins 
No support by the author.| Comments |
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#42
09-16-2007, 01:50 AM
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When replying to a message in my forum (http://mysite.com/forum/newreply.php?do=newreply&p=563) I got this error:
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PHP Code:
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#44
09-17-2007, 11:21 AM
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To be sure, check AdminCP > Maintenance > View PHP Info. Now look for a section titled mcrypt. If it's not there, that's your answer.
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#45
09-17-2007, 12:02 PM
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Quote:
 any other suggestions?
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#46
09-18-2007, 10:49 AM
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Installed works great had a mass of bots registering lately and not confirming their emails so hopefully should stop now
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#47
09-18-2007, 12:25 PM
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 maybe that info will help to point out the error I am receiving to magnus. thanks!
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#48
09-23-2007, 06:42 AM
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Either I'm missing something, or this script is messed up?
After installing the script, and using Method B. I attempted to register on my board a few times to see how it would react, and it appears to allow the registration if the first few characters of the first word are correct, or simply resemble that of the first word. It seems to not care what the rest looks like. Although it doesn't let me pass if the first 3-4 characters are completely different. What the hell? lol. 
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#49
09-27-2007, 01:47 AM
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Again, this is something you, as a human, can logically determine. A bot will see a mass of letters an be unable to differentiate them. The main goal of reCAPTCHA is to provide a next level of spam bot prevention while using wasted human cycles (re: distributed human computing) to help translate books to digital text.
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#50
09-27-2007, 04:32 AM
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But i find it confusing how yes, it makes it easier for humans, but at the same time could potentially make it easier for bots as well, could it not? All the bot would need to do is identify that your script is being used then attempt to read the word(s) which don't even need to be typed correctly! The first 3 letters or so seem to be the only requirement, the rest can be neglected or mistyped and the script still allows the user to continue...
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#51
09-27-2007, 07:11 AM
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yes they will learn the script but until then this is working mighty fine for me
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