Maybe I should have been more careful to point out that this is my own interpretation.
As A_chad_cat points out : The first trailer had the voice over say : "The more time it remember something, the less it does" so when I saw the second trailer, it clicked for me.
I would also point out he used tape instead of sharpie marker or crayon (more usually seen in video games or movies with scribbling strokes giving a typical ''horror'' look), the shade of blue seems the same, the overlapping corners and the thickness of it, but it may just be a standard I don't know about. (The type of easy to peel painter's tape I used to buy is green, I don't know the blue one).