I wrote my own php captcha script, with a jpeg header, so that I can say <img src="captcha.php"> which works by storing the value of the captcha into the session variable. When the user can't read it, I want it to be refreshable. I first tried $("#refresh").click(function() { $("#captcha").attr("src","captcha.php"); }); but o...
Hi, i have strange problem when using Zend_Captcha_Image. Sometimes it generate empty captcha, only with lines and dots, but with no text :( EDIT: It happens for every 4-10 pageview/image refresh. Look here for registration form here This only happens on one server. At another with same OS it is without any problem. Anybody with sam...
I am currently developing a user subscription module and I would like to know if I need to use captcha in rails 3 because authenticity_token sound good. Thanks ...
Hi there, I'm implementing captcha on my website like the one in http://www.4guysfromrolla.com/articles/060706-1.aspx. It is working fine while running on VS2008. However, not when uploaded on IIS. I think the image is being blocked by IIS.. anyone knows how to fix this? thanks ...
I am writing a "contact us" form on a web project that I am currently involved with. While I've used reCAPTCHA in the past, for this project, I would prefer not to clutter the interface with extra images, fields, etc. How many of you have had experience in adding a hidden field named something like "first_name" to your form. The ide...
I am currently using ambethia's recaptcha plugin for rails. I want to disable the message "incorrect-captcha-sol" whenever the user incorrectly enters the wrong recaptcha. How should I go about doing this? In the source file I get the following tags surrounding the error message <p class="recaptcha_error">incorrect-captcha-sol</p> ...
Hi All, I am sick to death of assholes spamming my site, and I hate those stupid Captcha things, and my customers have had it up to their necks with the captcha on my site. So, I had an idea. What if there was a small line. And all they had to do was simply drag a circle from the left of the line to the right. And once the circle reach...
I hear all this buzz about Captcha alot, what is it for? I mean basically it's just generating bitmap images of a random string and validating it from a user. Is it more than that? Any problems that we face building such a system?I had worked on such a system using .NET and was quiet general, are there any other things that we have to ke...
Hey there, My JSF web application uses PrimeFaces Captcha. It works properly under Firefox and IE, but it does not show under Chrome. I don't get any errors at page generation, but if I try to post the data with the invisible Captcha, the following error message is shown: j_idt25:j_idt32: Validation Error: Value is not valid. There i...
For protecting my website from spam and malicious registrations/posts/etc, is it better to use something like reCAPTCHA or an anti-spam script? I was planning on implementing reCAPTCHA for user registrations on my site, using the CodeIgniter reCAPTCHA library (here). However, the CI forum on this library (here) has a lot of negative vi...
Hi, i have a blog and the only user input is the commenting system, now i want to avoid the spam totally, which method will be wise to adopt? akismet way or captcha method.. my client doesnt mind his user entering few verification string to post comment, if i adopt it will i be able to completely control the spam if yes then could yo...
Hello everybody, can somebody sent me a link, or to provide me an example with pure Javascript/jQuery captcha. Because I can see a lots of examples with PHP/C# ... back end. But I need just Javascript . Thanks !! ...
Hi, I have a blog, and i have decided to use Akismet and reCaptcha for spam filtering, the way i am dealing with spam is a) the user should go through the captcha before posting a comment b) Now even if some spam bypass captcha then i would like Akismet to handle it. For akismet to handle the Spam, i thought of creating two different ...
I looked around the web and didn't get any good answers. I've got a really basic form and looking to add a captcha control to it so the client doesn't get spammed (at least, not any more than usual). I'd like to use google's reCaptcha but I'm not really sure where to start with infopath. A template part might be a good start, but I'm ...
Hello all, In the our website, we adopt reCAPTCHA to prevent spam. However, our clients complain that the validation is too complicated. I also agree that the reCAPTCHA is way too complicated for a regular person to read. It is especially hard for people who don't know English. I found that the CAPTCHA function of mail.yahoo.com is rea...
How would I go about defeating a Captcha? I specifically need help with turning the text in the image into a character array or string. Is there a particular set of algorithms that I should be looking at? ...
I want to show Recaptcha in a Popup. Like i have a page where the user can submit a note. If someone is submitting a note i want to show a popup where recaptcha control will be there and after validation the note will be submitted. How can i do that? Can someone please help. ...
I got this simple captcha script from online. I like it, and I edited it to suit my site, but was wondering if someone could edit it to add some random lines on the captcha itself as it is somewhat too simple. I did find tutorials on how to do it but it was not working for me in. Here is the simple captcha script; I would love to modif...
I have created a captcha image making program with PHP <?php function word($n) { $consonants = "bcdfghjklmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ"; $vowels = "aeiou"; $word[1] = $consonants[rand(0, 41)]; $word[2] .= $vowels[rand(0, 4)]; $word[3] .= $consonants[rand(0, 41)]; $word[4] .= $consonants[rand(0, 41)]; ret...
Is there any C# code/classes/open-source/tools that is recommended for adaptive authentication? Some functions of our app utilize a Captcha to avoid spamming or inappropriate behavior, which unfortunately also slows down our genuine users. I would like display the Captcha only if certain parameters look 'shady', such as unusual IP addre...