I have noticed that some CAPTCHA pages, like Cloudflare's, simply ask you to check a box to proceed. There is no clicking on traffic lights or entering characters. How does clicking on a check box tell them I am not a robot?

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[–] 4 points 2 years ago

I got stuck in one and couldn't even search for help because each result where people were complaining about it had a captcha preventing me from entering.

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