Accessibility in Blazor OTP Input component

30 Apr 20253 minutes to read

The Blazor OTP Input component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.

The accessibility compliance for the Blazor OTP Input component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Yes
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - The component does not meet the requirement.

WAI-ARIA attributes

The following ARIA attributes are used in the OTP Input component:

Attributes Purpose
role=group Attributes used to form a collection of items.
aria-label Attributes provides the text label for the OTP Inputs.

Keyboard interaction

The following keyboard shortcuts are supported by the OTP Input component.

Windows Mac Actions
← ← Focuses the previous input in the OTP.
→ → Focuses the next input in OTP
Tab Tab Moves the initial focus and shifts focus to the next input of the OTP.
Shift + Tab ⇧ + Tab Moves the focus to the previous input of the OTP.

See also

HtmlAttributes

HtmlAttributes allow you to specify additional HTML attributes to be applied to the OTP input component.

You can pass HTML attributes as key-value pairs to the HtmlAttributes property.

@using Syncfusion.Blazor.Inputs

<SfOtpInput HtmlAttributes=@attrs ></SfOtpInput>

@code {
    Dictionary<string, object> attrs = new Dictionary<string, object>()
    {
        {"title", "One-Time Password" }
    };
}

AriaLabels

AriaLabels define the ARIA-label attribute for each input field in the OTP input component. ARIA-labels enhance accessibility by providing descriptive labels for screen reader users, improving the user experience for individuals with disabilities.
You can provide an array of strings as ARIA-labels to the AriaLabels property. Each string corresponds to the ARIA-label attribute for the respective input field in the OTP input component.

@using Syncfusion.Blazor.Inputs

<SfOtpInput AriaLabels=@label></SfOtpInput>

@code {
    private string[] label = ["First digit", "Second digit", "Third digit", "Fourth digit"];
}