http://www.codeassembly.com/feed/comments/40 CodeAssembly - Simplicity is prerequisite for reliability - Comments en-us contact@codeassembly.com contact@codeassembly.com RSS Feed Generator the problem regarding accessibility to those who cant see the pictures can be solved with a button that when pressed will play a cat sound or a dog sound :) http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#44 2007-11-22 14:43:52 http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#44 This looks really good to me. But I cannot download the zip'd code. Looks like something may be wrong with the link. http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#38 2007-11-19 08:50:09 http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#38 This is fun! Is there any way of making this captcha accessible to those who have trouble seeing the pictures? http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#37 2007-11-16 08:22:14 http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#37 Sure, this is a neat idea.. The only problem is that the picture samples you are using are repetitive: it would only take a few dozen manual refreshes to download all the images, sort them into the respective dog or cat category, and use that for making a bot. The bot could just compare file sizes (I think all these images have slightly different sizes), or perhaps an MD5 hash of them. A more robust solution I believe would be to perhaps generate a new image, placing N pictures of cats and dogs in the picture randomly, sending that to the client, then asking how many of each one there are. Of course, this number would probably be less than 10, so even with that you could send enough junk to eventually get some through. http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#36 2007-11-15 21:34:39 http://codeassembly.com/A-more-fun-php-captcha-for-your-forms,-choose-the-cats-from-the-dogs/#36