Yes Nathan is almost 102 years old. He certainly is struggling with some things. Especially fast developing things like technical gears because if we look at it the biggest development happened within 20-30 years which is nothing compared to his unwilling lifespan. Everything is faster and while this old boy keeps up with a fresh face he still has only grown up with books and very old cable phones also running from the Nazis and some regimes in general he certainly hasn't found a friend in technology because the Gestapo and spies were the first ones to use such gears. But he recognises it's abilities for research on medical news and techniques. Hence he tries to use it. But in that extremely slow grandma way by typing with one finger for hours. He is the kind of person you wanna push away and let them tell you what to write but he will get faster and learn.