diff --git a/src/ATBAPP/DeviceControllerInterface.h b/src/ATBAPP/DeviceControllerInterface.h
index 49d7497..b660a4c 100644
--- a/src/ATBAPP/DeviceControllerInterface.h
+++ b/src/ATBAPP/DeviceControllerInterface.h
@@ -12,6 +12,7 @@ namespace nsDeviceControllerInterface {
     enum class PLUGIN_STATE : quint8;
     enum class RESULT_STATE : quint8;
     enum class CASH_STATE   : quint8;
+    enum class TICKET_VARIANT : quint8;
 }
 
 
@@ -59,6 +60,8 @@ public:
 
     // TASKS: printing ------------------------------------------------------------
     virtual void requestPrintTicket(const QHash<QString, QVariant> & printingData) = 0;
+    virtual void requestPrintTicket(nsDeviceControllerInterface::TICKET_VARIANT ticketVariant, const QHash<QString, QVariant> & printingData) = 0;
+    virtual void requestPrintReceipt(const QHash<QString, QVariant> & printingData) = 0;
 
 
     // mandantory ATBAPP plugin methods:
@@ -168,6 +171,16 @@ namespace nsDeviceControllerInterface {
         OVERPAYED,
         /* t.b.d. */
     };
+
+
+    enum class TICKET_VARIANT : quint8 {
+        PARKING_TICKET,
+        RECEIPT,
+        ERROR_RECEIPT,
+        START_RECEIPT,   // e.g. Szeged Start
+        STOP_RECEIPT,    // e.g. Szeged Stop
+    };
+
 }
 
 #endif // DEVICECONTROLLERINTERFACE_H