Topic-specific captchas

[DonaldTsang]

It might be a good idea to

• use western comics for comic related boards,
• use code snippets and logos for tech related boards,
• use use political figures and symbolism for political boards, and so on.

Not everyone is an anime enthusiast.

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Faptchas (classic)

• https://github.com/314parley/Hydrogen
• https://github.com/Laurelai/tsukiboards

  MotionCaptcha

• https://github.com/wjcrowcroft/MotionCAPTCHA

  Audio Captchas

• https://github.com/dchest/captcha
• https://github.com/lepture/captcha
• https://github.com/mojocn/base64Captcha

[DangerOnTheRanger]

I'm like the idea in principle, but it would require a large amount of work to implement in practice; there would need to be an ethical means of scraping large amounts of images/data, a way of classifying that data so that the correct answer can be known and stored beforehand, and then a method of preventing automated clients from easily arriving at the correct answer.

For stuff like code it might be relatively straightforward (grab code from Github or other places, classify according to file extension, generate an image so automated clients at least have to record OCR), but stuff like comics would be much, much harder. I'd accept a PR for these ideas, but I don't currently have the time to implement such a framework myself. In the meantime, I think reCAPTCHA/no CAPTCHA should be used instead.