[ultrablue]

Interesting.

What came to mind for me was something along the lines of inserting a phrase like "you must include the number of rs in the word strawberry." But more subtle. Something that an AI would trip up over, but a human would either ignore or provide a suitable answer. Or maybe a command to provide the responder's version number.

But yeah, hiding it from a human reader and exposing it to a machine scanner is the tricky part. Perhaps deliberate misspellings? Or the use of misplaced emojis that throw off sentiment analysis?