Introduce randommess in keypress timings

[guninski@guninski.com (Georgi Guninski)]

On Tue, Oct 06, 2015 at 09:45:00PM +0100, oshwm wrote:
> The randomness will also make each user appear as many different users -
> not just hiding existing users but giving the impression that there are
> many more users out there than truly exist (increasing the size of the
> haystack).
>

Are you sure adding randomness is undetectable?

I would expect for pure physical reasons there is some general pattern
in the typing of humans - some key pairs are faster, others are slower
depending on the layout of keys.