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🖱️ Fitts's Law Interface Lab (2D)

Interactive 2D pointing-task lab: Fitts's law predicts movement time to targets of different size and distance, for a simulated user or for you.

Physics & Mechanics2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategoryPhysics & Mechanics

RenderingCanvas 2D

DifficultyModerate

Target FPS60

ControlsSliders for target distance, target width, number of targets, user speed bias and motor noise; presets for toolbar, mobile and tiny-button layouts; drag targets to rearrange them; click a target yourself to take the test; pause, step and reset buttons.

Fitts's lawuser experiencehuman-computer interactionpointingusabilitythroughput

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⚙ Under the hood

Interactive 2D pointing-task lab for interface design: a simulated user moves a cursor along minimum-jerk paths between targets, and Fitts's law predicts movement time from target distance and width. Resize and move the targets to test layouts.

Fitts's lawuser experiencehuman-computer interactionpointingusabilitythroughput

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install