why captcha is needed

12306 automatic ticket placement-Logon, 12306 ticket placement 12306 after the website launches the image verification code, it puts forward higher requirements for the ticketing software. This article does not involve automatic identification

InfoQ interviewed Captchamvc founder Vyacheslav Volkov, who explored the CAPTCHAMVC project and his views on the future of Captcha.InfoQ: What prompted you to create your own CAPTCHA library? At that time I was starting to use the MVC 3

1, when you require thinkphp, will automatically generate in the app directory Common, Home, Runtime three folders.2. Input URL Http://localhost/blog/app/index.php/home/index/index appearsUnable to load controller:index error location FILE: D:\xampp\

Have you ever felt frustrated when trying to protect your application? Do you feel that existing Java security solutions are difficult to use and will only make you more confused? The Apache Shiro, described in this article, is an unusual Java

The cat and the prince change ---- wear others' shoes and follow your own path (the alternative thinking achieves ring0 to hide files) On the 10th, I received a programming order from my friend and asked me to write a lite version of remote control

C # batch download of icons, This article is a little long. It took several nights to edit and modify it. If there is a problem with wording and layout, please forgive me. This article is divided into four parts: the main content below is also the

C # batch download of icons, This article is a little long. It took several nights to edit and modify it. If there is a problem with wording and layout, please forgive me. This article is divided into four parts: the main content below is also the

Synchronous vs. asynchronous Synchronous and asynchronous attention is to the message communication mechanism (synchronous communication/asynchronous communication)The so-called synchronization is that when a call is made, the call does not

Before we write the HTML code needed for a form, we should first determine the type of data that comes from the end user and what rules the data should conform to. Model classes can be used to record this information. As defined in the model

My path to outsourcing Protection Undergraduate School: Jiangnan University School and major: Xi'an University of electronic science and technology integrated circuit Engineering GPA: 3.51 (full 4) Professional ranking: 9/122 (the first three years)