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 ...
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Keyboard: Why are there markings on the F and J keys of a keyboard? This idea was patented 23 years ago.
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 ...
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