diff --git a/org/openslide/OpenSlide.java b/org/openslide/OpenSlide.java
index 588be77..65910c9 100644
--- a/org/openslide/OpenSlide.java
+++ b/org/openslide/OpenSlide.java
@@ -84,6 +84,8 @@ public void close() throws IOException {
 
     final public static String PROPERTY_NAME_BACKGROUND_COLOR = "openslide.background-color";
 
+    final public static String PROPERTY_NAME_BARCODE = "openslide.barcode";
+
     final public static String PROPERTY_NAME_BOUNDS_HEIGHT = "openslide.bounds-height";
 
     final public static String PROPERTY_NAME_BOUNDS_WIDTH = "openslide.bounds-width";