Hideki does not type, typing is for the technologically lacking.
Words just appear in the tablet for Chouko.
"You are shouting. I can hear normally, so try to talk as usual."
"But yes, I've informed Med&Log, they've got your usual room prepared."
And then the intruder pops in.
With this one, Hideki can simply speak.
"Who are you and what are you doing here?"