The PS4 will enable developers to implement second screen gameplay across a range of mobile and tablet devices.
Meanwhile, the PS Vita can act as a second screento play full PS4 games if the main TV screen is in use.
This feature is powered by Gaikai's cloud gaming tech, which makes the PS4 essentially play the part of a server, while the Vita acts as a client. The firm's CEO David Perry also said the company's long term goal was to make all PS4 games playable through the handheld device.
But as well as second screen gameplay on the PS Vita, a new application called PlayStation App will enable iPhone, iPad and Android based smartphones and tablets to become second screens.
An example given was that users would be able to see maps of their games on a second screen.
Users will also be able to purchase games from their smartphones and tablets while away from the living room, and download it directly to the main PS4.
The PlayStation app will also enable users to watch other gamers playing PS4 titles through their smartphones and tablets.