Hacker News new | ask | show | jobs
by grantismo 5449 days ago
ReCaptchas are generated by failed attempts with OCR, which means the computer has no idea what the word actually is, and consequently can't know how it should be oriented. ReCaptachas are actually digitizing unknown text, so they serve a pretty meaningful purpose in contrast to competitors. http://www.google.com/recaptcha/learnmore