If you turn the AR video background (which is the default in Vuforia), you can have a 360 degrees experience of course; you can have that by holding a device in your hand, or by wearing Cardboard or GearVR headsets (since the video bckground is ON, you can look around at 360 degrees).
But if you need to show objects in 3D space around you, as if these were "anchored" to the real world, you will have to take into account the following options:
- option 1: there are targets / markers covering the full 360 degrees viewing range, in your surrounding environment, that Vuforia can track and augment
- option 2: there are no markers in the real world; in this case you can rely on the rotational head tracking provided by Cardboard or by Oculus/Gear; however, when you do so, you may experience some drift and/or jitter of the Virtual objects with respect to the real world, cause the tracking is based on rotation sensors from the device, which may suffer some inaccuracies and drift a little bit over time.
You probable need to try and see if the results look acceptable for your use case.