diff --git a/photograb/main.py b/photograb/main.py
index b02d78b..dd9a273 100644
--- a/photograb/main.py
+++ b/photograb/main.py
@@ -15,7 +15,12 @@ def main(opts):
         for ext in CONFIG.sections()
     }
 
+    if opts.update_card or opts.wipe_card:
+        # TODO: gracefully fail if camera is not writable.
+        pass
+
     if opts.grab:  # Grab new files from camera
+        # TODO: gracefully fail if camera is not readable.
         camera_files = camera.read_content()
         for ext, backup in backups.items():
             bkp_files = backup.read_content(exclude_trash=False)
diff --git a/photograb/store.py b/photograb/store.py
index 6aa73e1..11dc9f2 100644
--- a/photograb/store.py
+++ b/photograb/store.py
@@ -53,6 +53,7 @@ class Store:
         return content
 
     def copy_content(self, content):
+        # TODO: Warn on missing file to copy
         print(f"Copy files to {self.path} : ", end="")
         count = len(content)
         start_time = time.process_time()
@@ -62,6 +63,7 @@ class Store:
         print(f"{count} in {elapsed:.2f}s.")
 
     def move_content(self, content):
+        # TODO: Warn on missing file to move
         print(f"Move files to {self.path} : ", end="")
         count = len(content)
         start_time = time.process_time()
@@ -71,6 +73,7 @@ class Store:
         print(f"{count} in {elapsed:.2f}s.")
 
     def remove_content(self, content):
+        # TODO: Silently ignore missing files
         print(f"Removing files from {self.path} : ", end="")
         count = len(content)
         start_time = time.process_time()