private bool recognizeEmployee()
        {
            ///[Recognizing employee using various methods]
            Guid l_id = faceRecognitionMethod.UpdateInput(EmguCVHelper.CaptureImage).Run();

            if (l_id == Guid.Empty)
            {
                l_id = QRMethod.UpdateInput(EmguCVHelper.CaptureImage).Run();
            }

            if (l_id == Guid.Empty)
            {
                l_id = ManualMethod.UpdateInput(EnteredEmployeeID).Run();
            }


            if (l_id != Guid.Empty)
            {
                if (DetectedEmployee == null)
                {
                    DetectedEmployee = retrieveEmployee(l_id);
                }
            }

            if ((EnteredEmployeeID != null) &&
                (l_id == Guid.Empty || DetectedEmployee == null))
            {
                DetectedEmployee = null;
                return(false);
            }
            else
            {
                return(true);
            }
            ///[Recognizing employee using various methods]
        }