Fact · Typing and writing speed
The F and J keys have tactile markers, or key locator bumps, that let a typist find them by feel without looking at the keyboard.
Checked against its source on October 16, 2026
In the source's own words
“The keys "F" and "J" contains tactile markers or key locator bumps that allow the typist to feel and recognize them without having to look on the keyboard.”
Touch typing, Wikipedia, n.d., Training for beginners.
Open the original- What it measures
- The article explains that beginners learn the home row by feeling these markers, because the hands are often lifted from the keyboard to use a mouse.
- What it does not show
- Describes a common keyboard feature. Not every keyboard has the bumps, and the article does not say how many keyboards do.