diff --git a/README.md b/README.md
index 0b1257c..c92335f 100644
--- a/README.md
+++ b/README.md
@@ -103,6 +103,8 @@ this repository and it will be installed to /etc/nymea-networkmanager.conf with
       -m, --mode <MODE>            Run the daemon in a specific mode (offline,
                                    once, always, button, start). Default is
                                    "offline".
+      -b, --dbus-type <DBUSTYPE>   If given, a DBus interface will be exposed on
+                                   the chosen DBus bus type (session, system)
         
         
 
diff --git a/nymea-networkmanager.conf b/nymea-networkmanager.conf
index a6753c2..313eeef 100644
--- a/nymea-networkmanager.conf
+++ b/nymea-networkmanager.conf
@@ -4,3 +4,4 @@ Timeout=60
 AdvertiseName=BT WLAN setup
 PlatformName=nymea-box
 ButtonGpio=14
+DBusBusType=system
diff --git a/nymea-networkmanager/application.cpp b/nymea-networkmanager/application.cpp
index b5fb2a5..8add558 100644
--- a/nymea-networkmanager/application.cpp
+++ b/nymea-networkmanager/application.cpp
@@ -29,7 +29,6 @@
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "application.h"
-#include "loggingcategories.h"
 #include "core.h"
 
 #include <signal.h>
@@ -67,7 +66,6 @@ static void catchUnixSignals(const std::vector<int>& quitSignals, const std::vec
         qCDebug(dcApplication()) << "=====================================";
         s_aboutToShutdown = true;
 
-        Core::instance()->destroy();
         Application::quit();
     };
 
diff --git a/nymea-networkmanager/core.cpp b/nymea-networkmanager/core.cpp
index 19261d1..d4b5d5d 100644
--- a/nymea-networkmanager/core.cpp
+++ b/nymea-networkmanager/core.cpp
@@ -29,27 +29,11 @@
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "core.h"
-#include "loggingcategories.h"
+#include "nymeanetworkmanagerdbusservice.h"
 
 #include <QTimer>
 
-Core* Core::s_instance = nullptr;
-
-Core *Core::instance()
-{
-    if (!s_instance)
-        s_instance = new Core();
-
-    return s_instance;
-}
-
-void Core::destroy()
-{    
-    if (s_instance)
-        delete s_instance;
-
-    s_instance = nullptr;
-}
+Q_LOGGING_CATEGORY(dcApplication, "Application")
 
 NetworkManager *Core::networkManager() const
 {
@@ -106,14 +90,18 @@ void Core::setAdvertisingTimeout(int advertisingTimeout)
     m_advertisingTimeout = advertisingTimeout;
 }
 
-int Core::buttonGpio() const
+void Core::addGPioButton(int buttonGpio)
 {
-    return m_buttonGpio;
+    GpioButton *button = new GpioButton(buttonGpio, this);
+    button->setLongPressedTimeout(2000);
+    connect(button, &GpioButton::longPressed, this, &Core::startService);
+    m_buttons.append(button);
 }
 
-void Core::setButtonGpio(int buttonGpio)
+void Core::enableDBusInterface(QDBusConnection::BusType busType)
 {
-    m_buttonGpio = buttonGpio;
+    NymeaNetworkManagerDBusService *dbusService = new NymeaNetworkManagerDBusService(busType, this);
+    connect(dbusService, &NymeaNetworkManagerDBusService::enableBluetoothServerCalled, this, &Core::startService);
 }
 
 void Core::run()
@@ -140,10 +128,6 @@ Core::Core(QObject *parent) :
     m_advertisingTimer = new QTimer(this);
     m_advertisingTimer->setSingleShot(true);
     connect(m_advertisingTimer, &QTimer::timeout, this, &Core::onAdvertisingTimeout);
-
-    m_button = new GpioButton(m_buttonGpio, this);
-    m_button->setLongPressedTimeout(2000);
-    connect(m_button, &GpioButton::longPressed, this, &Core::onButtonLongPressed);
 }
 
 Core::~Core()
@@ -290,8 +274,8 @@ void Core::onBluetoothServerConnectedChanged(bool connected)
     qCDebug(dcApplication()) << "Bluetooth client" << (connected ? "connected" : "disconnected");
     m_advertisingTimer->stop();
 
-    if (!connected) {
-        m_advertisingTimer->stop();
+    if (!connected && m_mode != ModeAlways) {
+        m_bluetoothServer->stop();
     }
 }
 
@@ -332,8 +316,10 @@ void Core::onNetworkManagerAvailableChanged(bool available)
         }
         break;
     case ModeButton:
-        if (!m_button->enable()) {
-            qCCritical(dcApplication()) << "Failed to enable the GPIO button for" << m_buttonGpio;
+        foreach (GpioButton* button, m_buttons) {
+            if (!button->enable()) {
+                qCCritical(dcApplication()) << "Failed to enable the GPIO button for" << button->gpioNumber();
+            }
         }
         break;
     }
@@ -344,11 +330,6 @@ void Core::onNetworkManagerStateChanged(NetworkManager::NetworkManagerState stat
     evaluateNetworkManagerState(state);
 }
 
-void Core::onButtonLongPressed()
-{
-    startService();
-}
-
 void Core::onNymeaServiceAvailableChanged(bool available)
 {
     if (available)
diff --git a/nymea-networkmanager/core.h b/nymea-networkmanager/core.h
index 47fc34d..274a9c4 100644
--- a/nymea-networkmanager/core.h
+++ b/nymea-networkmanager/core.h
@@ -39,10 +39,14 @@
 #include "networkmanager.h"
 #include "bluetooth/bluetoothserver.h"
 
+Q_DECLARE_LOGGING_CATEGORY(dcApplication)
+
 class Core : public QObject
 {
     Q_OBJECT
 public:
+    explicit Core(QObject *parent = nullptr);
+    ~Core();
 
     enum Mode {
         ModeAlways,
@@ -53,9 +57,6 @@ public:
     };
     Q_ENUM(Mode)
 
-    static Core* instance();
-    void destroy();
-
     NetworkManager *networkManager() const;
     BluetoothServer *bluetoothServer() const;
     NymeadService *nymeaService() const;
@@ -72,22 +73,17 @@ public:
     int advertisingTimeout() const;
     void setAdvertisingTimeout(int advertisingTimeout);
 
-    int buttonGpio() const;
-    void setButtonGpio(int buttonGpio);
+    void addGPioButton(int buttonGpio);
+    void enableDBusInterface(QDBusConnection::BusType busType);
 
     void run();
 
 private:
-    explicit Core(QObject *parent = nullptr);
-    ~Core();
-
-    static Core *s_instance;
-
     NetworkManager *m_networkManager = nullptr;
     BluetoothServer *m_bluetoothServer = nullptr;
     NymeadService *m_nymeaService = nullptr;
     WirelessNetworkDevice *m_wirelessDevice = nullptr;
-    GpioButton *m_button = nullptr;
+    QList<GpioButton*> m_buttons;
 
     QTimer *m_advertisingTimer = nullptr;
 
@@ -95,7 +91,6 @@ private:
     QString m_advertiseName;
     QString m_platformName;
     int m_advertisingTimeout = 60;
-    int m_buttonGpio = -1;
 
     void evaluateNetworkManagerState(NetworkManager::NetworkManagerState state);
 
@@ -111,8 +106,6 @@ private slots:
     void onNetworkManagerAvailableChanged(bool available);
     void onNetworkManagerStateChanged(NetworkManager::NetworkManagerState state);
 
-    void onButtonLongPressed();
-
     void onNymeaServiceAvailableChanged(bool available);
 
 };
diff --git a/nymea-networkmanager/loggingcategories.cpp b/nymea-networkmanager/loggingcategories.cpp
deleted file mode 100644
index 5c74cc6..0000000
--- a/nymea-networkmanager/loggingcategories.cpp
+++ /dev/null
@@ -1,34 +0,0 @@
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-*
-* Copyright 2013 - 2020, nymea GmbH
-* Contact: contact@nymea.io
-*
-* This file is part of nymea.
-* This project including source code and documentation is protected by
-* copyright law, and remains the property of nymea GmbH. All rights, including
-* reproduction, publication, editing and translation, are reserved. The use of
-* this project is subject to the terms of a license agreement to be concluded
-* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
-* under https://nymea.io/license
-*
-* GNU General Public License Usage
-* Alternatively, this project may be redistributed and/or modified under the
-* terms of the GNU General Public License as published by the Free Software
-* Foundation, GNU version 3. This project is distributed in the hope that it
-* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-* Public License for more details.
-*
-* You should have received a copy of the GNU General Public License along with
-* this project. If not, see <https://www.gnu.org/licenses/>.
-*
-* For any further details and any questions please contact us under
-* contact@nymea.io or see our FAQ/Licensing Information on
-* https://nymea.io/license/faq
-*
-* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-#include "loggingcategories.h"
-
-Q_LOGGING_CATEGORY(dcApplication, "Application")
-Q_LOGGING_CATEGORY(dcNymeaService, "NymeaService")
diff --git a/nymea-networkmanager/loggingcategories.h b/nymea-networkmanager/loggingcategories.h
deleted file mode 100644
index 46ccaff..0000000
--- a/nymea-networkmanager/loggingcategories.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-*
-* Copyright 2013 - 2020, nymea GmbH
-* Contact: contact@nymea.io
-*
-* This file is part of nymea.
-* This project including source code and documentation is protected by
-* copyright law, and remains the property of nymea GmbH. All rights, including
-* reproduction, publication, editing and translation, are reserved. The use of
-* this project is subject to the terms of a license agreement to be concluded
-* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
-* under https://nymea.io/license
-*
-* GNU General Public License Usage
-* Alternatively, this project may be redistributed and/or modified under the
-* terms of the GNU General Public License as published by the Free Software
-* Foundation, GNU version 3. This project is distributed in the hope that it
-* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-* Public License for more details.
-*
-* You should have received a copy of the GNU General Public License along with
-* this project. If not, see <https://www.gnu.org/licenses/>.
-*
-* For any further details and any questions please contact us under
-* contact@nymea.io or see our FAQ/Licensing Information on
-* https://nymea.io/license/faq
-*
-* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-#ifndef LOGGINGCATEGORIES_H
-#define LOGGINGCATEGORIES_H
-
-#include <QDebug>
-#include <QLoggingCategory>
-
-Q_DECLARE_LOGGING_CATEGORY(dcApplication)
-Q_DECLARE_LOGGING_CATEGORY(dcNymeaService)
-
-#endif // LOGGINGCATEGORIES_H
diff --git a/nymea-networkmanager/main.cpp b/nymea-networkmanager/main.cpp
index 4823d94..9e68aaa 100644
--- a/nymea-networkmanager/main.cpp
+++ b/nymea-networkmanager/main.cpp
@@ -38,7 +38,6 @@
 
 #include "core.h"
 #include "application.h"
-#include "loggingcategories.h"
 
 static const char *const normal = "\033[0m";
 static const char *const warning = "\e[33m";
@@ -96,6 +95,7 @@ int main(int argc, char *argv[])
     int buttonGpio = -1;
     QString advertiseName = "BT WLAN setup";
     QString platformName = "nymea-box";
+    QString dbusBusType;
 
     Application application(argc, argv);
     application.setApplicationName("nymea-networkmanager");
@@ -140,6 +140,9 @@ int main(int argc, char *argv[])
     QCommandLineOption modeOption(QStringList() << "m" << "mode", "Run the daemon in a specific mode (offline, once, always, button, start). Default is \"offline\".", "MODE");
     parser.addOption(modeOption);
 
+    QCommandLineOption dbusBusTypeOption({"b", "dbus-type"}, "If given, a DBus interface will be exposed on the chosen DBus bus type (session, system)", "DBUSTYPE");
+    parser.addOption(dbusBusTypeOption);
+
     parser.process(application);
 
     // Enable debug categories
@@ -147,6 +150,7 @@ int main(int argc, char *argv[])
     s_loggingFilters.insert("NymeaService", parser.isSet(debugOption));
     s_loggingFilters.insert("NetworkManager", parser.isSet(debugOption) );
     s_loggingFilters.insert("NetworkManagerBluetoothServer", parser.isSet(debugOption));
+    s_loggingFilters.insert("DBus", parser.isSet(debugOption));
 
     QLoggingCategory::installFilter(loggingCategoryFilter);
 
@@ -190,6 +194,9 @@ int main(int argc, char *argv[])
             if (settings.contains("PlatformName")) {
                 platformName = settings.value("PlatformName").toString();
             }
+            if (settings.contains("DBusBusType")) {
+                dbusBusType = settings.value("DBusBusType").toString();
+            }
             break;
         }
     }
@@ -224,6 +231,9 @@ int main(int argc, char *argv[])
     if (parser.isSet(gpioOption)) {
         buttonGpio = parser.value(gpioOption).toInt(&gpioValueOk);
     }
+    if (parser.isSet(dbusBusTypeOption)) {
+        dbusBusType = parser.value(dbusBusTypeOption);
+    }
 
     // All parsed. Validate input:
     if (!timeoutValueOk) {
@@ -238,10 +248,12 @@ int main(int argc, char *argv[])
         qCCritical(dcApplication()) << QString("Invalid timeout value passed: \"%1\". The minimal timeout is 10 [s].").arg(parser.value(timeoutOption));
         return(1);
     }
-
     if (mode == Core::ModeButton && buttonGpio <= 0) {
-        qCCritical(dcApplication()) << "Button mode selected but no valid GPIO passed.";
-        return(1);
+        qCWarning(dcApplication()) << "Button mode selected but no valid GPIO passed.";
+    }
+    if (!dbusBusType.isEmpty() && dbusBusType != "system" && dbusBusType != "session" && dbusBusType != "none") {
+        qCCritical(dcApplication()) << "Invalid DBus bus type:" << dbusBusType;
+        return 1;
     }
 
     qCDebug(dcApplication()) << "=====================================";
@@ -251,17 +263,27 @@ int main(int argc, char *argv[])
     qCDebug(dcApplication()) << "Platform name:" << platformName;
     qCDebug(dcApplication()) << "Mode:" << mode;
     qCDebug(dcApplication()) << "Timeout:" << timeout;
-    if (mode == Core::ModeButton)
+    if (mode == Core::ModeButton && buttonGpio > 0) {
         qCDebug(dcApplication()) << "Button GPIO:" << buttonGpio;
+    }
+    if (!dbusBusType.isEmpty() && dbusBusType != "none") {
+        qCDebug(dcApplication()) << "DBus interface:" << dbusBusType;
+    }
 
     // Start core
-    Core::instance()->setMode(mode);
-    Core::instance()->setAdvertisingTimeout(timeout);
-    Core::instance()->setAdvertiseName(advertiseName);
-    Core::instance()->setPlatformName(platformName);
-    Core::instance()->setButtonGpio(buttonGpio);
+    Core core(&application);
+    core.setMode(mode);
+    core.setAdvertisingTimeout(timeout);
+    core.setAdvertiseName(advertiseName);
+    core.setPlatformName(platformName);
+    core.addGPioButton(buttonGpio);
+    if (dbusBusType == "system") {
+        core.enableDBusInterface(QDBusConnection::SystemBus);
+    } else if (dbusBusType == "session") {
+        core.enableDBusInterface(QDBusConnection::SessionBus);
+    }
 
-    Core::instance()->run();
+    core.run();
 
     return application.exec();
 }
diff --git a/nymea-networkmanager/nymea-networkmanager.pro b/nymea-networkmanager/nymea-networkmanager.pro
index fd84155..48db5f0 100644
--- a/nymea-networkmanager/nymea-networkmanager.pro
+++ b/nymea-networkmanager/nymea-networkmanager.pro
@@ -14,8 +14,8 @@ PKGCONFIG += nymea-networkmanager nymea-gpio
 HEADERS += \
     application.h \
     core.h \
-    loggingcategories.h \
     nymeadservice.h \
+    nymeanetworkmanagerdbusservice.h \
     pushbuttonagent.h \
 
 
@@ -23,8 +23,8 @@ SOURCES += \
     main.cpp \
     application.cpp \
     core.cpp \
-    loggingcategories.cpp \
     nymeadservice.cpp \
+    nymeanetworkmanagerdbusservice.cpp \
     pushbuttonagent.cpp \
 
 target.path = /usr/bin
diff --git a/nymea-networkmanager/nymeadservice.cpp b/nymea-networkmanager/nymeadservice.cpp
index b241fbe..ca9f2a1 100644
--- a/nymea-networkmanager/nymeadservice.cpp
+++ b/nymea-networkmanager/nymeadservice.cpp
@@ -29,7 +29,10 @@
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "nymeadservice.h"
-#include "loggingcategories.h"
+
+#include <QLoggingCategory>
+
+Q_LOGGING_CATEGORY(dcNymeaService, "NymeaService")
 
 NymeadService::NymeadService(bool pushbuttonEnabled, QObject *parent) :
     QObject(parent),
@@ -65,7 +68,7 @@ bool NymeadService::available() const
     return m_available;
 }
 
-void NymeadService::enableBluetooth(const bool &enable)
+void NymeadService::enableBluetooth(bool enable)
 {
     if (!m_nymeadHardwareBluetoothInterface) {
         qCWarning(dcNymeaService()) << "Could not enable/disable bluetooth hardware resource. D-Bus interface not available.";
diff --git a/nymea-networkmanager/nymeadservice.h b/nymea-networkmanager/nymeadservice.h
index ab435a9..cad7840 100644
--- a/nymea-networkmanager/nymeadservice.h
+++ b/nymea-networkmanager/nymeadservice.h
@@ -46,7 +46,7 @@ public:
     ~NymeadService();
     bool available() const;
 
-    void enableBluetooth(const bool &enable);
+    void enableBluetooth(bool enable);
     void pushButtonPressed();
 
 private:
diff --git a/nymea-networkmanager/nymeanetworkmanagerdbusservice.cpp b/nymea-networkmanager/nymeanetworkmanagerdbusservice.cpp
new file mode 100644
index 0000000..b5484a9
--- /dev/null
+++ b/nymea-networkmanager/nymeanetworkmanagerdbusservice.cpp
@@ -0,0 +1,27 @@
+#include "nymeanetworkmanagerdbusservice.h"
+
+#include <QLoggingCategory>
+
+Q_LOGGING_CATEGORY(dcDBus, "DBus");
+
+NymeaNetworkManagerDBusService::NymeaNetworkManagerDBusService(QDBusConnection::BusType busType, QObject *parent) : QObject(parent),
+    m_connection(busType == QDBusConnection::SystemBus ? QDBusConnection::systemBus() : QDBusConnection::sessionBus())
+{
+    bool status = m_connection.registerService("io.nymea.networkmanager");
+    if (!status) {
+        qCWarning(dcDBus()) << "Failed to register D-Bus service.";
+        return;
+    }
+    status = m_connection.registerObject("/io/nymea/networkmanager", "io.nymea.networkmanager", this, QDBusConnection::ExportScriptableSlots);
+    if (!status) {
+        qCWarning(dcDBus()) << "Failed to register D-Bus object.";
+        return;
+    }
+    qCDebug(dcDBus()) << "Registered DBus interface";
+}
+
+void NymeaNetworkManagerDBusService::enableBluetoothServer()
+{
+    qCDebug(dcDBus()) << "Enable bluetooth server called";
+    emit enableBluetoothServerCalled();
+}
diff --git a/nymea-networkmanager/nymeanetworkmanagerdbusservice.h b/nymea-networkmanager/nymeanetworkmanagerdbusservice.h
new file mode 100644
index 0000000..9004d34
--- /dev/null
+++ b/nymea-networkmanager/nymeanetworkmanagerdbusservice.h
@@ -0,0 +1,24 @@
+#ifndef NYMEANETWORKMANAGERDBUSSERVICE_H
+#define NYMEANETWORKMANAGERDBUSSERVICE_H
+
+#include <QObject>
+#include <QDBusConnection>
+
+class NymeaNetworkManagerDBusService : public QObject
+{
+    Q_OBJECT
+public:
+    explicit NymeaNetworkManagerDBusService(QDBusConnection::BusType busType, QObject *parent = nullptr);
+
+public slots:
+    Q_SCRIPTABLE void enableBluetoothServer();
+
+signals:
+    void enableBluetoothServerCalled();
+
+private:
+    QDBusConnection m_connection;
+
+};
+
+#endif // NYMEANETWORKMANAGERDBUSSERVICE_H
diff --git a/nymea-networkmanager/pushbuttonagent.cpp b/nymea-networkmanager/pushbuttonagent.cpp
index 994483c..5559c51 100644
--- a/nymea-networkmanager/pushbuttonagent.cpp
+++ b/nymea-networkmanager/pushbuttonagent.cpp
@@ -29,10 +29,12 @@
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "pushbuttonagent.h"
-#include "loggingcategories.h"
 
 #include <QDBusMessage>
 #include <QDBusObjectPath>
+#include <QLoggingCategory>
+
+Q_DECLARE_LOGGING_CATEGORY(dcNymeaService)
 
 PushButtonAgent::PushButtonAgent(QObject *parent) :
     QObject(parent)