diff --git a/scanslicer/controller_detection.py b/scanslicer/controller_detection.py
new file mode 100644
index 0000000..28846e4
--- /dev/null
+++ b/scanslicer/controller_detection.py
@@ -0,0 +1,9 @@
+import traceback
+
+import cv2
+from PySide6.QtCore import QObject, QRunnable, QThreadPool, Signal
+from PySide6.QtGui import QImage
+from PySide6.QtWidgets import QMessageBox
+
+
+# DetectionTaskSignals: class definition for ScanSlicer behavior.