PawSense is a Windows package that tries to detect when a cat is walking across a keyboard and locks it.

https://priceonomics.com/the-software-that-detects-when-a-cat-is-messing/

I don’t know of a Linux equivalent, though I’d swear I remember something similar that was targeted at the author’s young 2-year-old daughter, was named after her, but which I cannot now find.