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 screen to play full PS4 games if the main TV screen is in use.
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.
The PlayStation app will also enable users to watch other gamers playing PS4 titles through their smartphones and tablets.