diff --git a/src/ATBAPP/DeviceControllerInterface.h b/src/ATBAPP/DeviceControllerInterface.h
index 3d5d3e8..ac760bc 100644
--- a/src/ATBAPP/DeviceControllerInterface.h
+++ b/src/ATBAPP/DeviceControllerInterface.h
@@ -44,6 +44,9 @@ public:
     virtual void cashCollect() = 0;
     virtual void cashAbort() = 0;
 
+    // TASKS: Account -------------------------------------------------------------
+
+    virtual void requestAccount() = 0;
 
 
     // TASKS: printing ------------------------------------------------------------
@@ -95,6 +98,11 @@ signals:
      */
     virtual void requestServiceMode() = 0;
 
+    /**
+     * emitted e.g. if service door is opened
+     */
+    virtual void requestAccountResponse(const QHash<QString, QVariant> & accountData) = 0;
+
     /**
      * emitted on error
      * depending on errorCode: