30 Things You Didn’t Know The Use For

18. Anyone familiar with a keyboard will be aware that the ‘F’ and ‘J’ keys have tiny bumps on them. There’s a reason these bumps are located on these keys on every keyboard and it’s because in 10-finger typing, these are the home keys where your index fingers rest. The bumps help typists find their way back to the home position without having to glance down from the screen.