Quote Originally Posted by Blokeymon View Post
This.

It's usually what throws people when they plug in a USB keyboard and then it doesn't work. It does, but I believe that the standard setting has Direct Chat turned off, meaning the keyboard is used for controlling the character.

Turn Direct Chat on, and whenever you press a key, it'll automatically start typing in the chat box.

Took me a while to work it out, but yeah, there it is.
I actually have direct chat turn off when using a keyboard in tandem with my controller on a PS4.
Having it turned off allows me to use the hot keys and I only have to hit enter to start chatting, exactly like what you would do if playing on a PC and want to type.

If direct chat is off the keyboard will definitely still work on a PS4.