I have explicitly asked if there is something that is not CAPTCHA.
Because in the age of ever smarter AI do you really want to solve CAPTCHA more and more frequently, and not to show you're not a bot, but to prove you are human with a physical body borne from an ovum.
It is not crazy to think we will eventually need to prove this fact somehow.
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=capt...