captcha

noun

capt·cha ˈkap-chə

variants or CAPTCHA

: a test to prevent spamming software from accessing a website by requiring visitors to the site to solve a simple puzzle (typically by reading and transcribing a series of numbers or letters from a distorted image) in order to gain access

The point of the CAPTCHA is that reading those swirly letters is something that computers aren't very good at. If you can read them, you're probably not a piece of software run by a spammer.—

Lev Grossman

Examples of captcha in a Sentence

Recent Examples on the Web

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The breach underscores the importance of implementing defenses like CAPTCHA and other automated bot detection tools in systems handling sensitive data. —

Lars Daniel, Forbes, 26 Nov. 2024 But this is not an entirely new problem in the world of CAPTCHAs. —

Benj Edwards, Ars Technica, 27 Sep. 2024 People have been complaining for a while that passing a CAPTCHA is too difficult, but developer and tech CEO Guillermo Rauch has made one of the hardest yet: a fully playable CAPTCHA based on the classic PC game Doom. —

Samuel Axon, Ars Technica, 2 Jan. 2025 These sites are used by hackers to present you with what appears to be a legitimate CAPTCHA verification page. —

Kurt Knutsson, Cyberguy Report, Fox News, 18 Dec. 2024 See all Example Sentences for captcha