How to pause/freeze the camera?

You can get the current camera image from CameraDevice GetCameraImage (https://library.vuforia.com/articles/Solution/How-To-Access-the-Camera-Image-in-Unity)

Then create a texture2d from the image and use this as the texture for the BackgroundPlane

See the article I linked, you need to register a callback with the Vuforia service to set the camera pixel format first. Then also check Image is not null before using it.

Hey there!!

First include this line at the very top of your script:

Using Vuforia;

And then use this to freeze:

Vuforia.Instance.Pause();

Use this line to unfreeze:

Vuforia.Instance.Play();

using Vuforia;

VuforiaRenderer.Instance.Pause(true);

Pausing Vuforia Camera using VuforiaRenderer.Instance.Pause(true); in OnApplicationPause(bool true) when app comes back from background on iOS device, but the screen is upside down.