Why are there bumps on the F and J keyboard keys?
The small bumps or ridges found on the F and J console keys are to help clients accurately position their left and right hands without having to look at the keyboard. For instance, without taking a gander at your hands, you can feel the little knocks to accurately situate your left and right forefingers on the F and J keys. When you’re hands are on the home row key position, you ought to have the option to find the rest of the keys on the keyboard.