I have a large Phone Inventory that is currently managed via spreadsheet. There are dozen's of columns full of information. If this information were to be migrated to ServiceDesk, we would need to create dozen's of Additional Asset Fields to match the columns. These fields ONLY apply to our phones and nothing else. But because these fields would show up on every asset we have, we did not put them into ServiceDesk since it would clutter up every asset page we look at. 

Is there a way to have these additional fields NOT show up at all if we are looking at an IT/NON IT Asset that is not a phone?

I have a page script that'll hide empty fields on templates I list. I'm wondering if the same can be done for anything found under assets.