I recently read an article about how those #CAPTCHA things that ask you to do stuff like, "Click all the boxes that have cars" actually have much less to do with proving you're human than with training various AI products to better recognize things in photos. Basically they're outsourcing their AI training to the public and falsely framing it as a security mechanism. It might have been Edward Snowden's book, I'm not sure.
@gerowen indeed, #Google is using #CAPTCHA to exploit labor, which in some situations in the US amounts to a 13th amendment issue (involuntary servitude). Google's CAPTCHA also gives preferential treatment to logged in Google users, which adds to the tracking of those users by associating them to the site where the captcha is presented.
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