Targets & Spacing

Targets

• Min sizes: 44×44 pt (iOS), 48×48 dp (Android).
• Add 8–12 px spacing between adjacent targets.

Placement

• Use edges/corners; exploit motor “sticky” boundaries.
• Avoid placing destructive actions near primary actions.

References

• Apple HIG — Touch Targets: https://developer.apple.com/design/human-interface-guidelines/visual-design/adaptivity-and-layout#Touch-Targets
• Material Design — Minimum touch target size: https://m3.material.io/foundations/accessible-design/accessibility-basics
• Fitts’s Law resources (e.g., Accot & Zhai, Steering law) for pointing performance.