"What is the best way to prevent keyboard marks?"에 답변I just found out today, after replacing my screen, that the marks are caused by the oil and acids from your fingers, and not by the pressure from the keys. The marks are damage to the anti-glare coating, and, as such, are not actual stains that you can clean off without removing the coating altogether, which is an option. SO, you need to clean your hands and keyboard regularly with isopropyl alcohol. There’s kind of a funky solution, if your screen is really bad and you’re feeling adventurous. You can remove the coating altogether with a soft cloth, Listerine, and some time. Sounds ridiculous, but I’ve done it myself. Then, if you can’t stand the glare, you can apply a third party screen protector like the ones you put on your phone.