The president of Sony Worldwide Studios, Shuhei Yoshida, has revealed in a tweet today that the PS Vita can only be used as a controller with “specifically programmed” PS4 games. This was after being asked, “Could you tell us if the PS Vita “The Ultimate companion” Can be used as a second controller on the PS4?”
@InsideEddie Hey BRO! In a normal sense, no. Unless a game is specifically programmed to allow such use of PS Vita.
— Shuhei Yoshida (@yosp) July 26, 2013
Sony has, hoewever, confirmed that they will make all PS4 games compatible for remote play on the PS Vita. This feature will allow PS4 games to be streamed onto the handheld device over Wi-Fi, a feature that many fans are looking forward to.