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[possible solution] CAPTCHA and OCR
Posted by MGCJerry, 08-22-2007, 10:48 PM It seeems that captcha is on its way out now that more applications are able to "read" captcha images. Since I like trying to stay a step ahead, what do you think of this concept and do you think it will work. Just a note, it is not completed at this time as I'm still coding it. You can keep refreshing the page to see the others. This is still strictly a work in progress (WIP). I have this setup... * For some, I have 2 rows of numbers/letters. The script will expect only one row to be re-typed. * Using the 2 rows setup from above, the script could also ask for the letters in column 1 to be re-typed. There are 4 columns. * Thers also one for where the script will generate a 8 character string, but it will ask for letters with a specified color. How well do you think this will thwart such applications using OCR capabilities.? Demo: http://mgcjerry.net/captcha.html Just a note: * That site is run out of my house specifically for development purposes so if you access it and get parse errors, or no loads... you know a possible reason why the script will be up and down. * Remember... It's not done, I'm going to add grid lines around the lettering for the columns and rows and possibly make the text larger. * Also right now, the colors only return as one color... Soon, each letter will be given a random color.
Posted by Steven, 08-22-2007, 11:10 PM looks great. I actually thought about making a similar application.
Posted by macker, 08-23-2007, 05:14 AM It's a creative idea, but what's the audience? Will people be able to figure it out, and put up with it, for legitimate use? Or will it discourage real users more than it will automated abuse systems? Objective answers, rather than just "copy the text verbatim", will be more effective. In the same way, you could say "Enter the second word", "2 + 2", "what is the even number in the list above?", etc., but these all require the user to pause and think; once the novelty wears off, will they still tolerate it? Not to be critical of the methods, they sound interesting, just to give some feedback on forming a mechanism that's not only effective against abuse, but is "usable" as well
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