To ensure users can interact safely on the internet, websites and online services use a technique called CAPTCHA. This acronym stands for “Completely Automated Public Turing test to tell Computers and Humans Apart.” CAPTCHA is designed to verify whether a user is human or not.
When using a CAPTCHA, you are usually asked to enter a code displayed on the screen by holding down a button or pressing a key for a certain number of seconds. If you’re a human, you can read the code correctly and type it in. However, if you’re a bot, you’ll find it harder to enter the correct code.
CAPTCHA is often used as a security measure to prevent automated programs from accessing websites or completing tasks online. It helps protect users’ personal information and prevents spammers from using automated tools to spread malware or engage in other malicious activities.
Source: https://www.mysanantonio.com/realestate/article/austin-rent-prices-20362593.php