If you work on a computer or laptop, take a look at your keyboard. You will see small raised lines or bumps on the 'F' and 'J' keys. Have you ever noticed why these are there? Many people consider ...
Hosted on MSN
Keyboard: Why are there markings on the F and J keys of a keyboard? This idea was patented 23 years ago.
Keyboard F and J Marking Line Use: Whether you're a desktop user or a laptop user, have you noticed something on your system's keyboard? Have you seen the raised lines (marking lines) on the F and J ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback