Bad: tiny hit area (20×20)
Better: 44×44 minimum
- 44×44 px minimum: ensures thumbs can easily tap the control
- Spacing: keep space between touch targets, not just size
- No hover-only tooltips: always provide a visible, accessible label
- Considers keyboard too: focus ring must be visible, easy to activate with Tab+Enter/Space
- Test on real devices: fingers are big; simulate touch!