CAPTCHA Meaning and
Definition
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CAPTCHA is an acronym that stands for "Completely Automated Public Turing test to tell Computers and Humans Apart." It is a security measure and verification tool widely used to determine whether the user of an online platform is a human or a computer program.
CAPTCHAs are designed to prevent automated bots or malicious software from gaining unauthorized access to websites or systems. They typically employ various tests or challenges that are easy for humans to solve but difficult for computers to bypass. By requiring users to complete these tests, CAPTCHAs ensure a higher level of security and protect against activities like spamming, hacking, or data scraping.
Common examples of CAPTCHAs include distorted or scrambled alphanumeric characters that users are required to input correctly, ticking a box to confirm that they are not a robot, or identifying specific objects in an image. Some CAPTCHAs also include an audio option for visually-impaired users, where they have to listen and type in a series of numbers or words.
While CAPTCHAs were originally designed to increase the security of online platforms, their complex algorithms and distorted characters have occasionally posed challenges for users with visual impairments or cognitive disabilities. As a result, newer versions of CAPTCHAs aim to be user-friendly while retaining the necessary level of security.
Common Misspellings for CAPTCHA
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