I am and my vision is far from perfect. I have fingers on my hands - not matchsticks, so I designed this keyboard for myself. If youre under and have no problems with vision, please do not install. You will need it later. But maybe it will be a good lifehack for your parents now. This ergonomic keyboard for Android allows using % of your phones screen for big keys making it indispensable on small screen devices and for fat fingers (% is not an advertising slogan: it is literally %). Swipe up to switch into % display mode. This big keyboard preserves your vision and reduces eye strain. Big keyboard keys are easier to hit less typos. The layout of this large keyboard for Android is easy to learn its a QWERTY keyboard smartly compressed into extra large keyboard, what makes it ideal for large hands.