Accessibility use case
Motor Accessibility and Tremor Support
Motor Access access guidance for Tamil DS
How people interact with controls safely, supporting WCAG 2.5.1 (Pointer Gestures) and 2.5.8 (Target Size).
Detailed guidance for real users, assistive technology, component behavior, testing, and release checks.
Real user scenario
A user with hand tremor pays a bill on mobile. They need large targets, enough spacing, no drag-only controls, confirmation before payment, and an easy way to undo a wrong selection. If buttons are tiny or too close, the task becomes risky.
How people use this access method
Movement may be imprecise, slow, painful, or inconsistent.
Hover and drag can be difficult or impossible.
Accidental taps and double activations are common in dense UI.
Fatigue increases over long flows.
Large targets, spacing, confirmation, and undo reduce risk.
Design requirements
These requirements are product requirements, not optional polish. If a Tamil DS component or page breaks one of these rules, users may be blocked even when the visual interface looks finished.
Component behavior implications
Accessibility becomes real at component level. The same page may pass content review but fail when dialogs, forms, menus, cards, or status messages do not expose the right behavior.
IconButton should maintain a full square hit area.
Slider needs typed input or stepper alternatives for precision values.
Carousel needs button controls, not swipe only.
Dropdown and menu items need comfortable row height.
Destructive buttons should not sit immediately beside primary submit without separation.
Resizable panels need keyboard and reset options.
Testing script
Run this script before release. Automated checks are useful, but they do not replace trying the actual access method and completing a real task from start to finish.
Use the interface with one hand on mobile.
Try zoomed text and large touch settings.
Check target size and spacing.
Avoid using drag gestures during a full task.
Make an accidental selection and recover.
Test with keyboard only.
Review destructive actions for confirmation and undo.
Common failures and fixes
Tamil public-service context
Tamil DS must work for Tamil-first, English-first, and bilingual users across phones, desktops, kiosks, classrooms, offices, and public-service counters. These notes keep the guidance connected to local product reality.
Mobile-first public services must assume one-handed use and crowded environments.
Tamil labels may need larger buttons to avoid cramped touch targets.
Older adults may have both low vision and motor limitations, so zoom and target size must work together.
Release checklist
Targets are large enough.
Spacing prevents accidental activation.
Drag has alternatives.
Destructive actions are protected.
Progress is preserved across long tasks.