void Start()
    {
        _Sensor = Windows.Kinect.KinectSensor.GetDefault();

        if (_Sensor != null)
        {
            _Reader = _Sensor.BodyFrameSource.OpenReader();

            if (!_Sensor.IsOpen)
            {
                _Sensor.Open();
            }

            isActive = true;

            // Floor
            _Reader.FrameArrived += (object sender, BodyFrameArrivedEventArgs e) =>
            {
                using(var frame = e.FrameReference.AcquireFrame())
                {
                    this.currentTime = frame.RelativeTime;
                    this.currentFloor = frame.FloorClipPlane;
                }
            };
        }
    }