Is there any filter or privacy filter I could add to my laptop that would keep dust and marks off of it. I often have to keep cleaning my screen, and wondered if there is some way or hack around this?
There must be screen protectors available on the internet or in computer shops.
However, the vast majority of people just use a soft piece of cotton cloth to remove the dust. It is cheap, simple, ecologic, fast...
You do not even need a "special" piece of cloth. You can use a perfectly fine wearable t-shirt (or anything else), clean the screen, wash the t-shirt.
Of course, I assume there is only plain dust on the screen. If the screen gets oils, glues, pieces of food etc., then the discussion changes completely. In this case, even a dedicated additional screen filter will not prevent the grease and stuff go between the screen and the frame (that is, around the screen).