The answer
role='group' and aria-label on the container. aria-label='Digit N' on each input. inputmode='numeric' for mobile. autocomplete='one-time-code' for iOS. Focus the first input on load. Screen reader announcements with aria-live.
OTP Input Component: Complete Checklist
What accessibility features should an OTP input have?
More FAQs in OTP Input Component: Complete Checklist
Core (auto-focus, backspace, numeric filter, verify button), advanced (paste, arrows, error state, resend), accessibility (ARIA, inputmode, autocomplete), CSS (flexbox, focus styling), and testing (all features and keyboard). Allocate 40 min core, 20 min advanced, 10 min CSS, 10 min testing.
Auto-focus to next on digit entry, backspace to previous when empty, numeric-only input, and a verify button that enables when all inputs are filled. These are the minimum required features.
Test typing digits (auto-focus), backspace (goes to previous), paste (fills all), non-numeric input (filtered), arrow keys (navigation), verify button (enables when complete), keyboard only (no mouse), and mobile (numeric keyboard).
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