diff --git a/app/src/main/java/com/github/ma1co/pmcademo/app/CameraActivity.java b/app/src/main/java/com/github/ma1co/pmcademo/app/CameraActivity.java
index 67093ae..d9f96c0 100644
--- a/app/src/main/java/com/github/ma1co/pmcademo/app/CameraActivity.java
+++ b/app/src/main/java/com/github/ma1co/pmcademo/app/CameraActivity.java
@@ -65,6 +65,10 @@ protected boolean onFocusKeyUp() {
     @Override
     protected boolean onShutterKeyDown() {
         camera.getNormalCamera().takePicture(null, null, null);
+        // i) changing code to for camera.getNormalCamera().takePicture(null, null, mPicture);
+        //    then use     PictureCallback mPicture = new PictureCallback()
+        // ii) get the filename of the new picture created
+        // iii) Exif: add TAG UserComment  "something"
         return true;
     }