Feed 1 Tools tagged with 'captcha'
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reCAPTCHA
in 3 toolboxes
add to my toolboxA CAPTCHA service that attempts to prevent spam on websites by requiring a human-readable-only test before submitting. reCAPTCHA is distinct because the words that the user is identifying help digitize books.
tagged: authentication, books, bot, bots, captcha, protection, reCAPTCHA, Security, spam, validation