Dealing with bots

[Anna “CyberTailor”]

I've stumbled upon a clever way to stop bots from accessing dynamic
content and infinite loops: a simple captcha!

 > gemini://topotun.hldns.ru/cgi-bin/lock.cgi
 < 10 Protection against bots. What is 2+2?
(translated ru-en)

It's so obvious but I've never thought about it lol.

This article has /brilliant/ captcha ideas by the way:
=> https://nearcyan.com/you-probably-dont-need-recaptcha/

My all-time favorites are:

* Gentoo Wiki captcha
=> https://wiki.gentoo.org/wiki/Special:CreateAccount

* Mathematical analysis captcha (it won't look good in input prompts
  though, however unicode has enough math symbols)
=> https://math.stackexchange.com/questions/2266227/solving-math-captcha-involving-a-limit-and-sin1-x/2266239
=> https://lurkmore.to/Матановая_капча