Bot or human? Creating an invisible Turing test for the internet

This is interesting stuff, but I’d be seriously concerned about this accidentally catching people who have accessibility needs. How is it going to handle somebody using the keyboard to tab through controls instead of the mouse? Is a typing cadence detector going to flag people who use voice interfaces?

Well, they need a doctor signed key pair that shows that they are legit cripples. Feed it to the browser, win.