Captcha

usgb/ˈkæp.tʃə/
noun

A captcha is a system designed to distinguish between human users and automated programs by requiring users to complete a task that would be hard for a computer to perform.

To log in, please complete the captcha to prove you are not a robot.
Visual representation of "captcha" - A captcha is a system designed to distinguish between human users and automated programs by requiring users to complete a task that would be hard for a computer to perform.

Usage tips

Technical

security measure,user verification,bot prevention

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Visual representation of "captcha"
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Context

Captchas are important for online security.

Illustration for Context
Many websites use them to protect against bots.
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Complexity

The difficulty of captchas can vary widely.

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Some captchas require simple text input while others may involve selecting images.
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Variability

Different types of captchas are used across websites.

Illustration for Variability
Some may ask users to solve a math problem while others might require pattern recognition.
Visual representation of the word "Captcha"

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