diff --git a/src/ATBAPP/DeviceControllerInterface.h b/src/ATBAPP/DeviceControllerInterface.h
index caae99f..8ad9581 100644
--- a/src/ATBAPP/DeviceControllerInterface.h
+++ b/src/ATBAPP/DeviceControllerInterface.h
@@ -60,9 +60,10 @@ public:
     virtual void requestStopCashInput() = 0;
 
     /**
-     * called e.g. on Button "NEXT" in pay-up (direct coin input)
+     * called e.g. after printing
      */
     virtual void cashCollect() = 0;
+    virtual void cashCollect(const QString & amount) = 0;
     virtual void cashAbort() = 0;
 
     // TASKS: Account -------------------------------------------------------------
@@ -138,6 +139,14 @@ signals:
                                      const QString & errorCode,
                                      const QString & errorDescription);
 
+    /**
+     * emitted if cashPayment has been finished, e.g. in result to task cashCollect():
+     * if coins in changer must be given back to user.
+     */
+    void cashPaymentChanging(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & changeValue,        // amount changed by changer/escrow
+                                     const QString & errorCode,
+                                     const QString & errorDescription);
     /**
      * emitted if cashPayment has been finished, e.g. in result to task cashCollect():
      *  -> ticket should be printed sucessfully
@@ -145,7 +154,7 @@ signals:
      * Provides data for logging, especially changed value
      */
     void cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
-                                     const QString & newCashValue,  // total inserted amount amount
+                                     const QString & newCashValue,  // total inserted amount
                                      const QString & coinValue,     // inserted amount, paid with coins
                                      const QString & noteValue,     // inserted amount, paid with notes
                                      const QString & changeValue,   // amount changed by changer/escrow
@@ -203,7 +212,7 @@ signals:
 
 
 Q_DECLARE_INTERFACE(DeviceControllerInterface,
-                    "eu.atb.ptu.plugin.DeviceControllerInterface/1.1.6")
+                    "eu.atb.ptu.plugin.DeviceControllerInterface/1.2.0")
 
 
 namespace nsDeviceControllerInterface {