Invisible “Hit/click box’s” without shader call?

Hi,
When making invisible objects as “hitboxes” (areas for registering clicks/drags) is there a more efficient way to have them available to Verge, WITHOUT having to have their material call a transparency node?

I have been using transparency with a mix shader node with factor of 0.0001.

one technique to lower shader calls would be to give every hit box object the same said transparency material.

Am I right with that? Is there a different method that wouldn’t need to even do this? One that wouldn’t waste a material shader call on something that’s never seen?

Thanks!