How can I get Android_ID ?

How can I get Android_ID (64 bit value, 16hex digits) without plugins in Unity3d?

AndroidJavaClass clsUnity = new AndroidJavaClass(“com.unity3d.player.UnityPlayer”);
AndroidJavaObject objActivity = clsUnity.GetStatic(“currentActivity”);
AndroidJavaObject objResolver = objActivity.Call(“getContentResolver”);
AndroidJavaClass clsSecure = new AndroidJavaClass(“android.provider.Settings$Secure”);
string android_id = clsSecure.CallStatic(“getString”, objResolver, “android_id”);

Thanx to our japan friend D-lagoon.
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