Question How to make screen pitch black while the character still moves around normally?

I am building a first person game with the main character is blind, is there any way I can make the camera display nothing but black screen while the character is still able to move around in the environment and interact with things?

tutorial or hints stuff should be display on the black screen normally tho. Thanks in advance.

 

Most performant:
Have an unlit shader with alpha clipping so all objects simply are enabled.

Simple:
Have a black canvas covering the screen

 

Basically just a quad with a transparent black shader is all that's needed.

 

Even simpler and better performance solution -> disable the camera or configure the layers in camera "Culling mask" to only render the layers you want to be rendered. Or disable the mesh rendering components if you don't want stuff to be rendered.

Overlay canvas should still work even with no cameras.

 

Thanks guys, will give your suggestions a shot