Captcha idea: Ask visitors which direction a optical illusion is "moving"

Re:Captcha idea: Ask visitors which direction a optical illu... by emedchill on Saturday April 26, 2025 @07:49PM (#43808281)

so... there would only be 4 possible choices for a bot to make to guess correctly?

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Re:Captcha idea: Ask visitors which direction a optical illu... by emedchill on Saturday April 26, 2025 @07:50PM (#43808284)

left, right, up, and down?

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Re:Captcha idea: Ask visitors which direction a optical illu... by vitarnixofntrnt on Saturday April 26, 2025 @08:26PM (#43808417)

Unique ones with more choices can be machine generated and checked by a human before being deployed. Nevermind, that might be hard for humans, so multiple consecutive captchas would be better. This would make brute force becomes the best option. The goal is for the crawlers to give up attempting yet another VitaCaptcha and try something else, like playing the lottery.

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