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Designing for People with No or Limited Mobility
Designing for limited mobility requires moving beyond basic WCAG compliance to ensure interfaces are usable with voice commands, eye tracking, and adaptive keyboards.
What: Principal Accessibility Specialist Ela Gorla emphasizes the need for logical focus orders, unique text labels for screen readers, and large touch targets to support users who cannot use a mouse.
Why it matters: Web accessibility is often treated as a checklist rather than a functional requirement; designing for physical limitations is essential to avoid excluding users who rely on assistive software to complete critical tasks.
Takeaway: Audit your current forms for critical action prevention: ensure important actions like 'Delete' require confirmation and provide an 'Undo' option to protect users with motor tremors.
Deep dive
- Keyboard Navigation: Ensure logical focus order for sequential users.
- Focus Styles: Use high-contrast custom focus indicators (at least 3:1 ratio).
- Voice Commands: All interactive elements must have unique, visible text labels.
- Consistency: Standardize interactive components to help users recognize actionable items.
- Adaptability: Ensure interfaces work in both portrait and landscape, and at high zoom levels.
- Navigation Efficiency: Use skip links and clear prioritization to reduce required keystrokes.
- Pointer Accessibility: Maintain at least a 24x24 CSS pixel target size for all interactive items.
- Alternative Gestures: Provide button alternatives for drag-and-drop or pinch-to-zoom actions.
- Error Prevention: Use confirmation modals for irreversible actions.
- Form Design: Pre-populate fields and support multi-session completion to reduce typing fatigue.
Decoder
- Switch Control: An accessibility feature that allows users to operate a computer or mobile device using one or more physical switches.
- Eye Gaze/Tracking: Technology that tracks a user's eye movement to control an on-screen cursor.
- WCAG (Web Content Accessibility Guidelines): A set of international standards developed by the W3C to ensure web content is accessible to people with disabilities.
Original article
Digital products often overlook the needs of people with limited or no mobility, who rely on tools like speech recognition, eye tracking, and adaptive devices.
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