diff --git a/src/types.ts b/src/types.ts
index fea050f..8f0d03a 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -277,6 +277,10 @@ export interface Card {
    * This counter were deprecated for cards with COS 4.0 and higher
    */
   remainingSignatures?: number;
+  /**
+   * Available only for cards with COS v.4.0 and higher.
+   */
+  isAccessCodeSet?: boolean;
 }
 
 export type NFCStatusResponse = {