domains / families / design / fitts-law

fitts-law

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Apply Fitts's Law — target acquisition time depends on size and distance. Use when sizing and positioning controls, especially for touch. For how many controls to show at once, use `hicks-law`.

When to use

• sizing and positioning controls
• touch interface design
• minimizing target acquisition time
• optimizing target size and distance
• reducing interaction error rates

When not to use

• determining how many controls to show at once
• modeling cognitive decision time
• capturing accidental activation risk for gestures

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