The little raised lines or bumps on the F and J keys are tactile markers. Basically, they are there to assist keyboard users in finger positioning without the need for looking down. The mentioned keys ...

You likely spend hours at a computer keyboard each workday. But in this high-tech world, have you ever stopped and glanced down to notice the "F" and "J" keys? If you have, or if you have particularly ...

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 keys of your keyboard? Many people ...