Callback / Listener interfaces

The Web SDK uses a single callback object passed to open() instead of platform-specific listener interfaces.

callback shape

const callback = {
  on: {
    success: (obj) => { /* ... */ },
    error: (error) => { /* ... */ }
  }
};

Handler	Trigger
on.success(obj)	Capture completed successfully
on.error(error)	An error occurred during the session

success payload

Field	Type	Description
obj.base64	String	Captured image in Base64
obj.encrypted	String	JWT to be sent to the backend

error payload

The error handler receives an ErrorBio instance with:

Method	Description
getCode()	Error code
getDescription()	Error description

See Error handling for the full list of error codes.