That's astonishing. One will tell him to clean the screen appropriately and see what happens.
Fingers? No, he has mutated into a being with ten tiny fingers on the tips of each normal finger. He can type while playing a piano recital and picking his nose. (I try to discourage the former, cos of the noise.)
Screen calibration? One will advise his father of this possibility. He is a man of outstanding intellect who stares at screens for most of his working life. I'm not sure he will respond mind you, but then, that's the nature of technology in this modern world.