fitts-law-pointer-acceleration

What problem does it solve?

This skill helps you design UI interactions that feel accurate and predictable when pointer acceleration and differing input devices change how physical movement maps to on-screen cursor motion.

Core Features & Use Cases

• Explain pointer acceleration’s effect on Fitts’s Law: clarifies why distance and target size trade off differently under accelerated cursors.
• Guide UI decisions for precision tasks: supports drag-and-drop, sliders/scrubbers, scrub handles, and “fiddly” controls where fine positioning matters.
• Provide practical mitigation patterns: recommends larger hit areas and drop zones, snap-to behaviors, fine-control modifiers, and visible feedback/value display.

Quick Start

Use the skill to audit a drag interaction or slider for pointer-acceleration sensitivity and propose specific changes that improve accuracy across mouse and trackpad users.