> Use self-hosted CAPTCHA with simpler solutions

My favorite CAPTCHA is the one on the Arch Linux forms but I realize this cant be used many places. > What is the output of "date -u +%V$(uname)|sha1sum|sed 's/\W//g'"?

Easy to do but hard to do with computers. My second favorite are the math problems one.

However if these become popular people will just write bots for them and were back to square 1.

> > Use self-hosted CAPTCHA with simpler solutions

> My favorite CAPTCHA is the one on the Arch Linux forms but I realize this cant be used many places. > What is the output of "date -u +%V$(uname)|sha1sum|sed 's/\W//g'"?

> Easy to do but hard to do with computers. My second favorite are the math problems one.

> However if these become popular people will just write bots for them and were back to square 1.

Interesting...I wonder if they show destructive commands below a certain threshold. It would be funny if a captcha caused a bot to delete itself.

It would not be funny if even just one person ended up with that so I hope not. A bot would not end up in that situation anyways, either the earlier commands were already evaluated or your proposed remote kill would also not work.