Retrieving MAC address on Android device

Is there a way to retrieve the MAC of a wireless module in an Android device ?

On PC I was able to retrieve my MAC, but the same script on Android does not work.
Here's how I'm using it on PC:

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Net;
4. using System.Net.NetworkInformation;
5.  
6.  
7. public class MACBind : MonoBehaviour {
8.     public string PhysicalAddress;
9.    
10.     public void Start(){
11.         DisplayTypeAndAddress();
12.     }
13.    
14.     public void DisplayTypeAndAddress()
15.     {
16.         NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
17.         PhysicalAddress = nics[0].GetPhysicalAddress().ToString();
18.                 Debug.Log("MAC: " + PhysicalAddress );
19.          }
20.  

 

AFAIK the problem with Android is that if Wi-Fi is disabled, then nothing is returned.
http://android-developers.blogspot.com/2011/03/identifying-app-installations.html

But if you really need the mac address, then Java plugin would be the best option
http://stackoverflow.com/a/11705949

 

thank you.