[KongchangAI]
Unverified50% confidenceFactExact time

reCAPTCHA was originally developed by Luis von Ahn's team at Carnegie Mellon University; the first generation required users to identify two distorted words, one of which came from text that OCR could not recognize in Google Books scans.

1
Sources
50%
Confidence
Long-term
Relevance
9/29/2026
First Seen

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