Text Captcha

Definition updated on November 2023

What is a Text Captcha?

In a text CAPTCHA, the user must read and type in characters that are displayed on the screen in order to complete the challenge. It is one of the most popular CAPTCHA variants, also referred to as a text-cha. Users of the text-cha game must select the correct letters and numbers from a distorted image and enter the text. The task is intended to be simple for people to complete but challenging for bots to automate. Different text CAPTCHA types are available, including distorted text, scrambled letters, and straightforward mathematical calculations. A text CAPTCHA is used to verify that a user is human and not a computer program because computers program can't read and understand language as easily as people can.

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