The Economic Times

Those tiny bumps on the F and J keys aren't manufacturing marks; they let your fingers find the home row without looking at the keyboard

The small tactile bumps on the F and J keys serve as essential guides for locating the home row. These markers enhance accessibility for visually impaired individuals and aid sighted typists in establishing muscle memory for quicker typing. This feature has become a standard design element across many keyboard types, making typing more accurate without the need for frequent visual confirmation.