import com.fingerprintjs.android.fpjs_pro.Configuration
import com.fingerprintjs.android.fpjs_pro.FingerprintJSFactory
...

// Initialize and configure the SDK
val factory = FingerprintJSFactory(applicationContext)
val configuration = Configuration(
  apiKey = "<<browserToken>>",
  // The 'region' must match the region associated with your API key
  region = Configuration.Region.US,
  // For custom subdomain or proxy integration, use this option to specify a custom endpoint.
  // If you do not have a custom endpoint, this parameter can be skipped.
  endpointUrl = "custom-endpoint-URL",
  // Additionally, you may also specify alternate, fallback endpoints to redirect failed
  // requests.
  fallbackEndpointUrls = listOf(
      "fallback-endpoint-URL-1",
      "fallback-endpoint-URL-2",
  ),
  extendedResponseFormat = false
)
 
val fpjsClient = factory.createInstance(
  configuration
)

// Get a 'visitorId'
fpjsClient.getVisitorId { visitorIdResponse ->
  val visitorId = visitorIdResponse.visitorId
  // Use the visitorId
}