diff --git a/README.md b/README.md
index 5484479..c69240a 100644
--- a/README.md
+++ b/README.md
@@ -980,7 +980,9 @@ guarantee that your application continues to function properly in the future.
     downloaded files with an MD5 hash that matches the provided value. This is useful for avoiding the saving of error
     pages and stub files. The `fields` member is a list of fields that should play audio when the card is displayed in
     Anki. The `allowDuplicate` member inside `options` group can be set to true to enable adding duplicate cards.
-    Normally duplicate cards can not be added and trigger exception.
+    Normally duplicate cards can not be added and trigger exception. The `duplicateScope` member inside `options` can be
+    used to specify the scope for which duplicates are checked. A value of `"deck"` will only check for duplicates in the
+    target deck; any other value will check the entire collection.
 
     *Sample request*:
     ```json
@@ -996,7 +998,8 @@ guarantee that your application continues to function properly in the future.
                     "Back": "back content"
                 },
                 "options": {
-                    "allowDuplicate": false
+                    "allowDuplicate": false,
+                    "duplicateScope": "deck"
                 },
                 "tags": [
                     "yomichan"
diff --git a/plugin/__init__.py b/plugin/__init__.py
index e00946f..db241aa 100644
--- a/plugin/__init__.py
+++ b/plugin/__init__.py
@@ -204,13 +204,16 @@ class AnkiConnect:
                 ankiNote[name] = value
 
         allowDuplicate = False
+        duplicateScope = None
         if 'options' in note:
           if 'allowDuplicate' in note['options']:
             allowDuplicate = note['options']['allowDuplicate']
             if type(allowDuplicate) is not bool:
               raise Exception('option parameter \'allowDuplicate\' must be boolean')
+          if 'duplicateScope' in note['options']:
+            duplicateScope = note['options']['duplicateScope']
 
-        duplicateOrEmpty = self.isNoteDuplicateOrEmptyInDeck(ankiNote, deck)
+        duplicateOrEmpty = self.isNoteDuplicateOrEmptyInScope(ankiNote, deck, duplicateScope)
         if duplicateOrEmpty == 1:
             raise Exception('cannot create note because it is empty')
         elif duplicateOrEmpty == 2:
@@ -223,10 +226,10 @@ class AnkiConnect:
         else:
             raise Exception('cannot create note for unknown reason')
 
-    def isNoteDuplicateOrEmptyInDeck(self, note, deck):
+    def isNoteDuplicateOrEmptyInScope(self, note, deck, duplicateScope):
         "1 if first is empty; 2 if first is a duplicate, False otherwise."
         result = note.dupeOrEmpty()
-        if result != 2:
+        if result != 2 or duplicateScope != 'deck':
             return result
 
         # dupeOrEmpty returns if a note is a global duplicate