Unity script to turn on/off HMD simulator if a headset is connected/disconnected

HeadsetDetector.cs

public class HeadsetDetector : MonoBehaviour
{
    private InputDeviceCharacteristics headsetCharacteristic = InputDeviceCharacteristics.HeadMounted;
    private XRDeviceSimulator simulator;

    private void Awake()
    {
        simulator = GetComponent<XRDeviceSimulator>();
        simulator.enabled = true;
    }

    private void OnEnable()
    {
        InputDevices.deviceConnected += TurnOffSimulatorIfHMD;
        InputDevices.deviceDisconnected += TurnOnSimulatorIfHMD;
    }

    private void OnDisable()
    {
        InputDevices.deviceConnected -= TurnOffSimulatorIfHMD;
        InputDevices.deviceDisconnected -= TurnOnSimulatorIfHMD;
    }

    private void TurnOffSimulatorIfHMD(InputDevice device)
    {
        if (!device.characteristics.HasFlag(headsetCharacteristic))
            return;
        simulator.enabled = false;
    }

    private void TurnOnSimulatorIfHMD(InputDevice device)
    {
        if (!device.characteristics.HasFlag(headsetCharacteristic))
            return;
        simulator.enabled = true;
    }
}