By activating your PlayStation 4 as primary you can enjoy numerous benefits and actions

Anyone who uses your Primary PS4 system can enjoy applications you purchase from PlayStationStore.
You can automatically download to the PS4 system content you pre-ordered, or content purchased on PlayStationApp.
You can connect to the PS4 system from a PS Vita system via the Internet using Remote Play.

Activating a system

There are two ways to activate your system.

1. First time sign-in to your PSN account: You will be prompted to activate the console during the Sign-In process.

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2. After you have signed into your PSN Account: Select [PSN] > [Activate as Your Primary PS4] > [Activate].