diff --git a/ATBHMIconfig.cpp b/ATBHMIconfig.cpp
index c684275..881b7a1 100644
--- a/ATBHMIconfig.cpp
+++ b/ATBHMIconfig.cpp
@@ -213,8 +213,6 @@ void ATBHMIconfig::initDefered() {
     this->HelpButtonUsed = settings->value("showHelpButton", "0").toBool();
     this->InfoButtonUsed = settings->value("showInfoButton", "0").toBool();
 
-    this->ScreenChangeTimeoutTime = settings->value("screenChangeTimeoutTime", "10").toUInt();
-
     settings->endGroup();
 
     // [PAYMENT]
@@ -357,8 +355,6 @@ QString ATBHMIconfig::getSuspendTime()           {   return this->SuspendTime;
  */
 QString ATBHMIconfig::getSellTimeoutTime()       {   return this->SellTimeoutTime;          }
 
-quint32 ATBHMIconfig::getHMIScreenChangeTimeoutTime() {   return this->ScreenChangeTimeoutTime;  }
-
 QString ATBHMIconfig::getQmPath()                {   return this->qmPath;                   }
 
 bool ATBHMIconfig::hasFeatureTF()     {  return ((this->features & this->featureMaskTF) != 0);   }
diff --git a/ATBHMIconfig.h b/ATBHMIconfig.h
index f26a5b4..fa6e45a 100644
--- a/ATBHMIconfig.h
+++ b/ATBHMIconfig.h
@@ -107,22 +107,6 @@ class ATBHMIconfig : public QObject
 
     QString currencySymbol;
 
-#ifdef USE_BARCODESCANNER
-    bool useBarcode;
-    QString barcodeScannerInputDeviceName;
-#endif
-
-#ifdef USE_RFIDREADER
-    bool useRFID;
-    QString rfidReaderInputDeviceName;
-#endif
-
-#ifdef USE_EXTERNAL_TICKETMANAGER
-    // for ticket management
-    QString endOfSellingTime;
-    int blockingTimeMin;
-#endif
-
     quint8 defaultLanguage;
 
 
@@ -141,18 +125,6 @@ class ATBHMIconfig : public QObject
 
     QByteArray characterSet;
 
-#ifdef USE_ISMAS
-    QString ismasHost;
-    quint16 ismasPort;
-    QString ismasID;
-    bool ismasDebug;
-    bool ismasCheckEntries;
-    quint16 ismasConnectionTimeout;
-    bool usePINgenerator;
-#endif
-
-    quint32 ScreenChangeTimeoutTime;
-
     PAYMENT_VARIANTS::CASH_VARIANT cashVariant;
 
     // ErrorCode-mapping
@@ -219,31 +191,6 @@ public:
 
     const QString & getPaymentCurrencySymbol();
 
-#ifdef USE_BARCODESCANNER
-    bool getUseBarcodeScanner();
-    QString & getBarcodeScannerInputDevice();
-#endif
-
-#ifdef USE_RFIDREADER
-    bool getUseRFIDReader();
-    QString & getRFIDReaderInputDevice();
-#endif
-
-#ifdef USE_EXTERNAL_TICKETMANAGER
-    QString getEndOfSellingTime();
-    int getBlockingTime();
-#endif
-
-#ifdef USE_ISMAS
-    QString getISMASHost();
-    quint16 getISMASPort();
-    QString getISMASId();
-    bool isIsmasDebug();
-    bool IsmasCheckEntries();
-    bool UsePINgenerator();
-    quint16 getIsmasConnectionTimeout();
-#endif
-
     void setFeatureTF();
     void unsetFeatureTF();
 
diff --git a/atb_system.cpp b/atb_system.cpp
index d4207e2..7a6a855 100644
--- a/atb_system.cpp
+++ b/atb_system.cpp
@@ -125,77 +125,6 @@ void ATB_system::BeepStop() {
 }
 
 
-int ATB_system::init_touch_feedback() {
-#if defined (ARCH_PTU2)
-  QString GPIODirName("/sys/class/gpio/");
-  QString directionFileName;
-  QString valueFileName;
-
-  // # echo 129 > /sys/class/gpio/export
-  QFile file("/sys/class/gpio/export");
-  file.open(QIODevice::WriteOnly | QIODevice::Text);
-  QTextStream out(&file);
-  out << config->getTouchFeedbackGPIO();
-  file.close();
-
-  // check, if gpio-dir was created
-  GPIODirName.append("gpio");
-  GPIODirName.append(config->getTouchFeedbackGPIO());
-  QFileInfo fileinfo1(GPIODirName);
-  if (! fileinfo1.isDir() ) {
-      qDebug() << "ATB_system::init_touch_feedback(): \"" << GPIODirName << "\" is not a directory";
-      config->unsetFeatureTF();
-      return -1;
-  }
-  directionFileName = GPIODirName + "/direction";
-  QFileInfo fileinfo2(directionFileName);
-  if (! fileinfo2.isWritable() ) {
-      qDebug() << "ATB_system::init_touch_feedback(): \"" << directionFileName << "\" is not writable";
-      config->unsetFeatureTF();
-      return -1;
-  }
-
-  // # echo out > /sys/class/gpio/gpio129/direction
-  QFile directionfile(directionFileName);
-  directionfile.open(QIODevice::ReadWrite | QIODevice::Text);
-  QTextStream out2(&directionfile);
-  out2 << "out";
-  out2.flush();
-
-  // re-read 'direction' for confirmation
-  // -> the following is disabled because this sometimes failed
-  //QTextStream in(&directionfile);
-  //QString line = in.readLine();
-  //if (line != "out") {
-  //    qDebug() << "ATB_system::init_touch_feedback(): re-read directionfile failed";
-  //   config->unsetFeatureTF();
-  //    return -1;
-  //}
-  directionfile.close();
-
-  // open gpio file
-  valueFileName = GPIODirName + "/value";
-  this->tf_gpio = new QFile(valueFileName);
-
-  this->tf_gpio->open(QIODevice::WriteOnly);
-  this->tf_gpio_outstream = new QTextStream(this->tf_gpio);
-
-     qDebug() << "ATB_system::init_touch_feedback(): GPIODirName = \""   << GPIODirName   << "\"";
-     qDebug() << "ATB_system::init_touch_feedback(): valueFileName = \"" << valueFileName << "\"";
-
-#elif defined (ARCH_PTU4)
-  QString sysfs_buzzer("/sys/class/leds/Buzzer/brightness");
-
-  this->tf_gpio = new QFile(sysfs_buzzer);
-  tf_gpio->open(QIODevice::WriteOnly);
-
-  this->tf_gpio_outstream = new QTextStream(this->tf_gpio);
-#endif
-
-  return 1;
-}
-
-
 /********************************************************************************
  * set date/time
  *
diff --git a/atb_system.h b/atb_system.h
index 5a45c8f..c8d0860 100644
--- a/atb_system.h
+++ b/atb_system.h
@@ -31,9 +31,6 @@ class ATB_system : public QObject {
     Q_OBJECT
 
 private:
-    int init_touch_feedback();
-    int init_sc_dbus();
-
     ATBHMIconfig *config;
     QFile *tf_gpio;
     QTextStream *tf_gpio_outstream;