Accessibility in Blazor OTP Input component

6 Feb 20264 minutes to read

The Blazor OTP Input component follows established accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2, 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	AA
Section 508 Support
Screen Reader Support
Right-To-Left Support
Color Contrast
Mobile Device Support
Keyboard Navigation Support

- All features of the component meet the requirement.

- Some features of the component do not fully meet the requirement.

- 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	Applied to the container to group the OTP input fields.
aria-label	Provides a text label for the OTP input fields for assistive technologies.

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 the 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

• Accessibility in Syncfusion^® Blazor components

HtmlAttributes

HtmlAttributes allow specifying additional HTML attributes to be applied to the OTP input component for improved semantics and accessibility.

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-label values enhance accessibility by providing descriptive labels for screen reader users.

You can provide an array of strings as aria-label values 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"];
}