You probably know reCAPTCHAs as the gatekeepers to the internet — mini tests in the form of checkboxes, words, or photos that range from slightly annoying to comically frustrating.
Last Updated
September 4, 2025
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reCAPTCHAs: Blocking bots, preserving history, and inspiring memes
How reCAPTCHAs went from preventing spam to helping preserve history and generating memes.
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