The Hand Visual script in the Oculus Integration for Unity allows you to add hand models to your virtual reality application. Here are the steps to use the Hand Visual script:

First, make sure you have the Oculus Integration for Unity installed in your project.
Create a new empty GameObject in your Unity scene.
Attach the OVRHandPrefab to the GameObject. This prefab contains the Hand Visual script.
Set the hand pose to either left or right by selecting the corresponding controller hand anchor.
Set the hand scale to your desired size.
You can also adjust the material and color of the hand model.
Preview the scene in Unity and test the hand models by moving your hands in front of the Oculus Touch controllers.
That's it! You should now be able to use the Hand Visual script to add hand models to your VR application in Unity.
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