Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
distorted image ofletters andnumbers used to preventautomated use of websites. - noun by extension Anything that a
human must do to prove that they are not acomputer .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
Help support Wordnik (and make this page ad-free) by adopting the word CAPTCHA.
Examples
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The term CAPTCHA is an acronym that means "Completely Automated Public Turing test to tell Computers and Humans Apart".
pfblogs.org: The Ad-Free Personal Finance Blogs Aggregator 2009
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Solving the CAPTCHA is the final step in creating a new Facebook account.
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Luis von Ahn, the reCAPTCHA founder who co-authored Google's blog post, is one of the Carnegie Mellon researchers who coined the term CAPTCHA, short for Completely Automated Public Turing test to tell Computers and Humans Apart.
The Register 2009
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If you have ever re-typed two squiggly words on websites like Craigslist, Facebook, or Ticketmaster during an online registration or purchase process, then you already know one of von Ahn's previous start-ups. reCAPTCHA reduces spam on email and social media sites as well as e-commerce fraud by preventing automated bots from signing up for thousands of new accounts, hence the acronym CAPTCHA, which stands for "Completely Automated Public Turing test to tell Computers and Humans Apart."
Joe Kutchera: Translate the Web While Learning a New Language Joe Kutchera 2012
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If you have ever re-typed two squiggly words on websites like Craigslist, Facebook, or Ticketmaster during an online registration or purchase process, then you already know one of von Ahn's previous start-ups. reCAPTCHA reduces spam on email and social media sites as well as e-commerce fraud by preventing automated bots from signing up for thousands of new accounts, hence the acronym CAPTCHA, which stands for "Completely Automated Public Turing test to tell Computers and Humans Apart."
Joe Kutchera: Translate the Web While Learning a New Language Joe Kutchera 2012
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The whole premise behind the CAPTCHA is you want to allow users to access your service, as long as they're an actual person.
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For people who use screen-reading software, CAPTCHA is actually an image and can't be read by that software.
Petition for better accessibility of Yahoo! BA Haller 2008
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You must ALWAYS fill in the two word CAPTCHA below to submit a comment.
Donklephant Justin Gardner 2010
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A CAPTCHA is a simple test to determine if a user is human or computer.
BBspot 2010
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You must ALWAYS fill in the two word CAPTCHA below to submit a comment.
Donklephant 2010
Comments
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