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Ajax Fancy Captcha is a jQuery plugin that helps you protect your web pages from bots and spammers. We are introducing you to a new, intuitive way of completing “verify humanity” tasks. In order to do that you are asked to drag and drop specified item into a circle.

通过拖动解锁来实现评论验证。能够有效防止垃圾评论、机器人评论。