captcha

The previous version of reCAPTCHA provided the option to make a global key which would work on any domain. Now, in version 2, that option is gone, and the reCAPTCHA site claims that "Global Keys are not supported in the V2 API." I'm working with a large number of domain names that can change frequently without my intervention, and I don't want to have to add each new domain to the key. Is there a way to get reCAPTCHA to work on any domain without specifically authorizing each one? Aaron Cicali It is possible to implement reCAPTCHA Version 2.0 without verifying each domain: https://developers

I have the following piece of code inside an h:form <h:panelGrid id="captchaGrid"> <p:captcha id="captcha" label="Captcha" required="true" requiredMessage="required" validatorMessage="..."> </p:captcha> <p:message id="captchaMessage" for="captcha" /> </h:panelGrid> <p:commandButton id="submitButton" value="save" actionListener="#{userBean.save}" update="captchaGrid" onstart="doSomething()" oncomplete="doSomethingElse(xhr, status, args)" icon="ui-icon-check"> </p:commandButton> This works fine if I enter the captcha correctly. However, if I enter an invalid value, the captcha component just

i hate captcha, do you think there is a better solution Sandeepan Nath You may check Practical non-image based CAPTCHA approaches? I asked a question earlier Need suggestions/ideas for easy-to-use but secure captchas However if you are irritated due to the difficulty faced by users because of the very existence of captchas, then there has been a lot of debate over this and people are still trying hard to come up with a universal solution which can work even for very popular sites. You should see http://nedbatchelder.com/text/stopbots.html for implementation of Negative captchas . But sadly,

I'm looking for inspiration here. I need to employ some sort of human verification for my website, but the most common method these days (asking users to type the letters & numbers they see in an image into a text input box) seems a little rubbish - I find it hard sometimes to work out what the letters & numbers are. There must be a better way! I've had a few ideas, the best one seems to be to show users a series of images (4-6), and ask them to answer a question based on the contents of the images, such as: (show some geometric shapes) "Which image has 3 sides?" or (show picture of animals)

I wrote a program to remove the line from this captcha: first of all, I improve image visibility by median filter def apply_median_filter(self,img): img_gray=img.convert('L') img_gray=cv2.medianBlur(np.asarray(img_gray),3) img_bw=(img_gray>np.mean(img_gray))*255 return img_bw then I try to remove line: def eliminate_zeros(self,vector): return [(dex,v) for (dex,v) in enumerate(vector) if v!=0 ] def get_line_position(self,img): sumx=img.sum(axis=0) list_without_zeros=self.eliminate_zeros(sumx) min1,min2=heapq.nsmallest(2,list_without_zeros,key=itemgetter(1)) l=[dex for [dex,val] in enumerate

如果你的 Confluence 是允许公众访问的话，你可能会遇到垃圾内容的骚扰。 阻止垃圾发布者 希望阻止垃圾发布者： 启用验证码（Captcha），请参考页面 Configuring Captcha for Spam Prevention 。 将 Confluence 运行在 Apache webserver 之后，然后在 Apache 服务器上创建垃圾发布者的 IP 阻止策略。 https://www.cwiki.us/display/CONF6ZH/Preventing+and+Cleaning+Up+Spam 来源： oschina 链接： https://my.oschina.net/u/2344080/blog/1929948

如果你的 Confluence 站点是对公众开放的（允许匿名用户使用，添加评论，创建页面等），你可能会发现你的站点会被自动创建很多垃圾页面，评论或者其他垃圾内容。 你可以配置让 Confluence 通过确定添加内容的人为真正的用户而不是机器来确定内容是否是垃圾内容： 创建一个账户 添加一个评论 创建一个页面 编辑一个界面 向 Confluence 管理员发送请求 验证码（Captcha）是一个测试小程序来用于自动区分用户或者机器（比如说 robot 或 spider）。当验证码被启用后，用户将会看到下面随机的图片中的文字，然后用户必须将文字输入到文本框中随着表单同时提交。 屏幕截图：验证码测试示例 在默认情况下验证码是禁用的。当启用后，默认的配置是紧急针对匿名用户在对页面进行编辑和创建的时候需要使用验证码进行校验。你可以为所有用户选择使用验证码，你也可以直为一个特定的用户组选择启用验证码。 你需要具有系统管理员权限来配置验证码，来帮助 Confluence 防止垃圾内容。 如何在 Confluence 启用验证码来防止垃圾： 在屏幕的右上角单击 控制台按钮 ，然后选择 General Configuration 链接。 在左侧的面板中选择 垃圾防止（Spam Prevention） 。 在 Captcha 中选择 启用（ON） 。 如果你希望为一些特定的用户组禁用验证码：