Unverified50% confidenceFactExact time
CAPTCHA was proposed by a team at Carnegie Mellon University around 2000.
1
Sources
50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
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Related Claims
UnverifiedCAPTCHA was systematically formalized by Luis von Ahn and others at Carnegie Mellon University around the year 2000.77% similarUnverifiedThe CAPTCHA concept was formally proposed in 2003 by Luis von Ahn and others at Carnegie Mellon University, with its original form being distorted text recognition.52% similar
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