Dynamic and interactive laser projection

Hey, guys,

I’m trying to create the effect of a fog laser to visualize the detection range of a radar sensor. I found a useful tutorial to create a laser beam that stops at a collider.

Is there a way to create this effect in a different way to get a continuous projection?
In addition, the laser should be concealable by the hands in VR.

I am grateful for any tip or hint!

Many greetings