Question

I’m using Google’s Recaptcha control, using MVC Recaptcha. The MVC Recaptcha component wraps the Google Recaptcha control. For some reason, the control allows the first word to be entered only, but the second word can be missing and incorrect, and this works fine. Not in all cases, but I have noticed it in one area of the application.

Any idea why this might be happening?

Answer 1

From http://www.google.com/recaptcha/learnmore

“The user is then asked to read both words. If they solve the one for
which the answer is known, the system assumes their answer is correct
for the new one. The system then gives the new image to a number of
other people to determine, with higher confidence, whether the
original answer was correct.”

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“Currently, we are helping to digitize old editions of the New York Times and books from Google Books.”