Captcha is used to differentiate between humans

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This is a form of website authentication, often used to ensure the security of online systems. What is Captcha code? and computers Captcha codes are often displayed as images containing blurred or intentionally distorted letters and numbers, making them difficult to see and read . By requiring this code to be entered, the Captcha code can determine whether the user is a real person or a computer. This is because the Captcha code is designed so that humans can easily enter it when the correct rate is up to 80%. Meanwhile, if it were a computer, the correct rate would only be about 0.1%. Why are Captcha codes so difficult to read? If the Captcha is too easy to read within 1-2 seconds, the computer can also read it.



These computers can scan the Captcha pattern and decode the Email Data character table, leading to the system being attacked by spammers or hackers . Therefore, Captcha needs to be deformed so that only humans can decode it, ensuring the safety of the online system. How does Captcha code work? Captcha is designed to operate based on the principle of using human language and slang rules . This is something that computers and the Internet cannot understand. By providing information to users, Captcha codes force them to understand the meaning before accessing a website or system. What is Captcha? How Captcha codes work Captcha codes provide images of letters and numbers that are deformed, distorted, and possibly overlapping each other.



Users need to look closely for identification, then fill out the form and click submit. Meanwhile, this makes it difficult for computers and bots because they can often only follow default text patterns or enter random characters. Therefore, the rate of computers solving the Captcha code is very low, about 0.01%. Why do we need Captcha code? Uses of Captcha code Captcha codes were created with the main purpose of protecting websites, limiting much damage caused by automated software. By requiring Captcha code confirmation , websites can stop most attacks from malicious software and robots, making them virtually impossible to overcome. Anti-Spam Spam is a simple but very popular attack method today.