diff --git a/QtActivity.java b/examples/wear-os/qt-sensor-hack/QtActivity.java
index 9d8c46f..c068042 100644
--- a/QtActivity.java
+++ b/examples/wear-os/qt-sensor-hack/QtActivity.java
@@ -62,8 +62,56 @@ import android.view.accessibility.AccessibilityEvent;
 
 import org.qtproject.qt5.android.QtNative;
 
-public class QtActivity extends Activity
+// for hack
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.util.Log;
+
+//public class QtActivity extends Activity
+public class QtActivity extends Activity implements SensorEventListener
 {
+    // hack
+    public int _heart_rate_           = 0;
+    public int _heart_rate_accuracy_  = 0;
+    private static final String LQML  = "[LQML]";
+
+    // hack
+    public void iniSensors()
+    {
+        try {
+            //Log.d(LQML, "ini heart rate sensor...");
+            SensorManager mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
+            Sensor mHeartRateSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_HEART_RATE);
+            mSensorManager.registerListener(this, mHeartRateSensor, SensorManager.SENSOR_DELAY_NORMAL);
+            //Log.d(LQML, "ini heart rate sensor OK");
+        }
+        catch (Exception e) {
+            //Log.e(LQML, Log.getStackTraceString(e));
+        }
+    }
+
+    // hack
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy)
+    {
+        if (sensor.getType() == Sensor.TYPE_HEART_RATE) {
+            _heart_rate_accuracy_ = accuracy;
+            //Log.d(LQML, "BPM accuracy: " + _heart_rate_accuracy_);
+        }
+    }
+
+    // hack
+    @Override
+    public void onSensorChanged(SensorEvent event)
+    {
+        if (event.sensor.getType() == Sensor.TYPE_HEART_RATE) {
+            _heart_rate_ = Math.round(event.values[0]);
+            //Log.d(LQML, "BPM: " + _heart_rate_);
+        }
+    }
+
     public String APPLICATION_PARAMETERS = null; // use this variable to pass any parameters to your application,
                                                                // the parameters must not contain any white spaces
                                                                // and must be separated with "\t"