Как в юнити добавить датчик магнитометр?

using UnityEngine; 
using System.Collections; 
using UnityEngine.UI; 
public class test : MonoBehaviour {

  public Vector3 xyz; 
  private Text textlabel; 
  // Use this for initialization 
  void Start () { 
    textlabel = gameObject.GetComponent<Text>(); 
    Input.compass.enabled = true; 
  } 
  
  // Update is called once per frame 
  void Update () { 
    xyz = Input.compass.rawVector; 
      textlabel.text = string.Format ("x={0}:y={1}:z={2}:enabled={3}",xyz.x,xyz.y,xyz.z,Input.compass.enabled); 
  } 
}