captcha

问题 See the demo of JQuery Qaptcha here - http://www.myjqueryplugins.com/QapTcha/demo It requires you to slide the slider to unlock and prove you're human. I've read all about how it's setting random field values and erasing them, but isn't all that done via a javascript call? And if so then wouldn't a bot just need to run the javascript method and then the qaptcha is broken? Help me understand how this is secure... 回答1: Unfortunately, this does not appear to be a secure captcha. At the end of

问题 I want to make a captcha validation. I get the key from the recaptcha website and already succeed to put the public key to load the webpage with the challenge. <script type="text/javascript" src="http://api.recaptcha.net/challenge?k=<your_public_key>"> </script> <noscript> <iframe src="http://api.recaptcha.net/noscript?k=<your_public_key>" height="300" width="500" frameborder="0"></iframe><br> <textarea name="recaptcha_challenge_field" rows="3" cols="40"> </textarea> <input type="hidden" name

问题 Of all the forms of CAPTCHA available, which one is the "least crackable" while remaining fairly human readable? 回答1: I agree with Thomas. Captcha is on its way out. But if you must use it, reCAPTCHA is a pretty good provider with a simple API. 回答2: I believe that CAPTCHA is dying. If someone really wants to break it, it will be broken. I read (somewhere, don't remember where) about a site that gave you free porn in exchange for answering CAPTCHAs to they can be rendered obsolete by bots. So,

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . Have any programming methods have been used to defeat reCAPTCHA? I'm interested in seeing evidence and potentially demonstrations that reCAPTCHA in

问题 The image captcha randomly displays a blank captch. Roughly 4 out of 10 attempts. I have already discovered the problem and a post on the zend forum suggest the only fix is to edit the Zend Framework code. Is there any way to fix this without editing the ZF code? How come Zend have not fixed this in the releases since then, I have a look in the change log but nothing related to this? $w = $this->getWidth(); $h = $this->getHeight(); $fsize = $this->getFontSize(); $img_file = $this->getImgDir()

问题 I have a PHP script that prints a random number for use as a captcha code. However, for the life of me, I can't figure out why it works on one domain but not the other, even though the servers have the same exact specs. Displays a captcha code: http://www.unitedfleetparts.com/php-/captcha_code.php Displays NOTHING, even though it's the same exact script: http://www.uatparts.com/php-/captcha_code.php Please help me figure out how I can get this PHP script to work on my second domain. Any help

问题 I have created a form in a Bootstrap modal for user account registration: <div class="modal-body"> <form class="form-horizontal" id="registerForm"> <div class="form-group"> <label for="newUsername" class="control-label col-xs-3">Username</label> <div class="col-xs-9"> <input type="text" class="form-control" id="newUsername" required> </div> </div> <div class="form-group"> <label for="newPassword" class="control-label col-xs-3">Password</label> <div class="col-xs-9"> <input type="password"

问题 I am creating a custom captcha where random numbers are generated and you have to add them together etc. As of right now I am echo-ing these random numbers but now I need to pull them into a external file to test the sum against the input text. Can I add these to the POST[] array on form submission? 回答1: You have to have some way of keeping track of the numbers and retrieving them back later for verification. You could use session variables- put the numbers in at the time of the page load,

问题 How can I change captcha image size and text padding in image? I read official docs and havn't found any of those. 回答1: I have never used this app, but I've found in code something: #captcha/views.py def captcha_image(request, key, scale=1): #function goes here So if you call captch_image with additional paramater scale , you can change the size. If you use urls for this app like urlpatterns = patterns('captcha.views', url(r'image/(?P<key>\w+)/$', 'captcha_image', name='captcha-image', kwargs

问题 I have two forms on the same page...one for people in US and one for people Internationally. The user selects the form by selecting an icon. I have some javascript to enable the form according to the users choice. The issue is, that each form has a captcha and they are conflicting with one another. Currently I have the css set to "display: none;" for the inactive form. Is there an easy way to avoid this conflict, either with css or javascript? Here is a look at the current javascript: $