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As the distance between controls increases, Fitts' Law implies that their size should also increase to maintain quick and accurate interaction, particularly in high-resolution or large-scale displays.

Higher cursor speeds increase the difficulty of stopping at a precise location, leading to trade-offs in designing for fast navigation versus precision tasks in interfaces.

Fitts' Law states that targets closer to the current position can be reached faster, suggesting that interface elements should be positioned close to where users are expected to interact.

Fitts' Law also applies to touch interfaces but must consider the variability in finger sizes and the lack of hover state unlike cursors, guiding the design of touch targets to be appropriately sized for taps.

Fitts' Law suggests that cascading menus may slow users down due to increased pointing distance and smaller targets, encouraging designers to opt for single-level, wide menus where possible.

Fitts' Law predicts the time required to rapidly move to a target area, which is a function of the ratio between the distance to the target and the width of the target.

The equation for Fitts' Law is usually given by

The edge-of-screen effect, stemming from Fitts' Law, allows for faster selection of targets at the edge of the display since it effectively increases the target size along the edge dimension.

According to Fitts' Law, larger targets can be selected faster, so interface design should favor larger clickable areas for important and frequently used buttons.