diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.cpp b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
index 9d5d411..7e649d4 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.cpp
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
@@ -30,6 +30,14 @@ ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent) : QObject(
     connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByError()),   this, SLOT(onCashPayStopByError()));
     connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByTimeout()), this, SLOT(onCashPayStopByTimeout()));
 
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorServiceDoorOpened()),     this, SLOT(onServiceDoorOpened()));  // switch to ModeSERVICE
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorVaultDoorOpened()),       this, SLOT(onVaultDoorOpened()));    // Screen?? with message
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCoinBoxRemoved()),        this, SLOT(onCoinBoxRemoved()));     // Create/Send Account
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCoinBoxInserted()),       this, SLOT(onCoinBoxInserted()));
+    //connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCBinAndAllDoorsClosed()), this, SLOT( ??? )));
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorAllDoorsClosed()),        this, SLOT(onAllDoorsClosed()));     // check for errors, switch to mode IDLE
+
+
     this->currentSelectedTicketType = 0;
 }
 
@@ -65,22 +73,19 @@ PLUGIN_STATE ATBDeviceControllerPlugin::initDCPlugin(QObject *healthEventReceive
 void ATBDeviceControllerPlugin::onChangedProgramModeToSELL()
 {
     hw->dc_autoRequest(true);
-
 }
 
-void ATBDeviceControllerPlugin::changedProgramModeToSERVICE()
+void ATBDeviceControllerPlugin::onChangedProgramModeToSERVICE()
 {
     hw->dc_autoRequest(true);
-
 }
 
-void ATBDeviceControllerPlugin::changedProgramModeToIDLE()
+void ATBDeviceControllerPlugin::onChangedProgramModeToIDLE()
 {
     hw->dc_autoRequest(false);
-
 }
 
-void ATBDeviceControllerPlugin::changedProgramModeToOOO()
+void ATBDeviceControllerPlugin::onChangedProgramModeToOOO()
 {
 
 }
@@ -117,12 +122,57 @@ void ATBDeviceControllerPlugin::cashAbort()
 }
 
 // TASKS: Account -------------------------------------------------------------
+
+// for an external account request, e.g. by an ui-button:
 void ATBDeviceControllerPlugin::requestAccount()
 {
     qCritical() << "TODO: implement ATBDeviceControllerPlugin::requestAccount()";
 }
 
 
+// Door Events / Hardware contacts --------------------------------------------
+void ATBDeviceControllerPlugin::onServiceDoorOpened()
+{
+    qCritical() << "ATBDeviceControllerPlugin::onServiceDoorOpened()";
+
+    // switch to mode service
+    emit this->requestModeSERVICE();
+
+    // TODO:
+    // - create an HealthEvent (-> ISMAS-Event)
+}
+
+void ATBDeviceControllerPlugin::onVaultDoorOpened()
+{
+    // TODO:
+    // - show special screen / message on screen
+    // - create an HealthEvent (-> ISMAS-Event)
+    qCritical() << "TODO: implement ATBDeviceControllerPlugin::onVaultDoorOpened()";
+}
+
+void ATBDeviceControllerPlugin::onCoinBoxRemoved()
+{
+    // TODO:
+    // - create and send account (-> requestAccountResponse())
+    qCritical() << "TODO: implement ATBDeviceControllerPlugin::onCoinBoxRemoved()";
+}
+
+void ATBDeviceControllerPlugin::onCoinBoxInserted()
+{
+    qCritical() << "TODO: implement ATBDeviceControllerPlugin::onCoinBoxInserted()";
+}
+
+void ATBDeviceControllerPlugin::onAllDoorsClosed()
+{
+    // TODO:
+    // - check for errors, switch to mode IDLE
+
+    qCritical() << "TODO: implement ATBDeviceControllerPlugin::onAllDoorsClosed()";
+
+    emit this->requestModeIDLE();
+}
+
+
 // TASKS: printing ------------------------------------------------------------
 void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant> & printingData)
 {
diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.h b/src/ATBAPP/ATBDeviceControllerPlugin.h
index 14aca65..6e52be7 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.h
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.h
@@ -65,10 +65,10 @@ public:
     const QString getString(nsDeviceControllerInterface::RESULT_STATE resultState);;
 
 public slots:
-    virtual void onChangedProgramModeToSELL();
-    virtual void changedProgramModeToSERVICE();
-    virtual void changedProgramModeToIDLE();
-    virtual void changedProgramModeToOOO();
+    void onChangedProgramModeToSELL();
+    void onChangedProgramModeToSERVICE();
+    void onChangedProgramModeToIDLE();
+    void onChangedProgramModeToOOO();
 
 
 
@@ -90,11 +90,14 @@ signals:
                                      const QString & errorCode,
                                      const QString & errorDescription);
 
-    void requestServiceMode();
+    void requestModeSERVICE();
+    void requestModeIDLE();
+    void requestModeOOO();
 
     void requestAccountResponse(const QHash<QString, QVariant> & accountData);
 
 
+
     void Error(
             const QString & errorCode,
             const QString & errorDescription);
@@ -140,6 +143,13 @@ private slots:
    void onCashPayStopByEscrow();
    void onCashPayStopByError();
    void onCashPayStopByTimeout();
+
+   // doors and hardware contacts
+   void onServiceDoorOpened();
+   void onVaultDoorOpened();
+   void onCoinBoxRemoved();
+   void onCoinBoxInserted();
+   void onAllDoorsClosed();
 };
 
 #endif // ATBDEVICECONTROLLERPLUGIN_H