I popped a few more in until I hit the maximum 91 stored (either that or it broke). Thanks for fixing the way the space character is displayed.

You could use https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEve... to take advantage of keyboard layout information to more easily classify a user. E.g. if a German user is typing in English their key will register as "KeyY" but their key will register as "z". Even if the neural net just picks up on "non qwerty = weird" I think it would significantly help in it's ability to classify these corner case users.

I look forward to seeing how future versions fare!