Oh! When you open the hacking interface, it's already there by default.
You can't actually type in it though, it's just for receiving messages.
Nope, there's only 1 version.
What resolution are you playing at? I just tried running the game in 1366x768 and the black and green window ends up outside the bounds of the screen...
This is a gamejam game, so I guess I forgot about UI scaling, when I made it.
Edit: I tried fixing it, but unfortunately, the Unity version is too old and I can't open the project any more.
My internet is abysmal atm, so I can't get the old version, but I'll try again, when I'm somewhere with better internet :).