diff --git a/src/loci/formats/services/JZarrServiceImpl.java b/src/loci/formats/services/JZarrServiceImpl.java
index 26a8540..3f32518 100644
--- a/src/loci/formats/services/JZarrServiceImpl.java
+++ b/src/loci/formats/services/JZarrServiceImpl.java
@@ -372,4 +372,8 @@ private ZarrArray getArray(String path) throws IOException {
     }
     return array;
   }
+  
+  public boolean usingS3FileSystemStore() {
+    return s3fs != null;
+  }
 }