Android Question Fire OS 5.7.1.0 and Generate Unique Id

Try
    UID = GetUniqueID 
Catch
    'do this instead if there was an error trying to do the above code
    UID = GenRandomNumber
End Try

Public Sub  GetUniqueID As String
            Try
                Dim jo As JavaObject     = Me
                Dim ID As String         = jo.RunMethod("getUniqueID", Null)
                
                Log(ID)               
                
                Return ID               
            Catch
                Return ""
            End Try           
End Sub

#If Java
import android.media.MediaDrm;
import android.os.Build;
import android.content.*;
import java.util.*;

//private final Context context;
private String initialVal = "";


public String getUniqueID() {
   UUID wideVineUuid = new UUID(-0x121074568629b532L, -0x5c37d8232ae2de13L);
   try {
      MediaDrm wvDrm = new MediaDrm(wideVineUuid);
      byte[] wideVineId = wvDrm.getPropertyByteArray(MediaDrm.PROPERTY_DEVICE_UNIQUE_ID);
      Base64.Encoder enc = Base64.getEncoder();
      String encodedUid = enc.encodeToString(wideVineId);
      return encodedUid;
   } catch (Exception e) {
      return "";
   }
}

#End If

Dim InstalledFrom As String = cGenFuncs.GetInstallerPackageName  
           
            InstalledFrom = InstalledFrom.ToLowerCase
           
            If  InstalledFrom.Contains("amazon") Then              
                Log("Kindle Fire")
                Return "Kindle Fire"              
            End If
           
            Dim R                       As Reflector
           
            Dim Temp As String = r.GetStaticField("android.os.Build", "MODEL")

            If  Temp.StartsWith("KF") Then                                                  
                Log("Kindle Fire")
                               
                Return "Kindle Fire"
            End If