diff --git a/OmobiDisplayApp/QBluetoothLeUart b/OmobiDisplayApp/QBluetoothLeUart
index 76e4575..6ad924f 160000
--- a/OmobiDisplayApp/QBluetoothLeUart
+++ b/OmobiDisplayApp/QBluetoothLeUart
@@ -1 +1 @@
-Subproject commit 76e457593e889885fd410fdbcdd659706a1eceb8
+Subproject commit 6ad924f42634aa71df54b53f7de98394ad2ce298
diff --git a/OmobiDisplayApp/main.cpp b/OmobiDisplayApp/main.cpp
index 79e3c05..043d5b7 100644
--- a/OmobiDisplayApp/main.cpp
+++ b/OmobiDisplayApp/main.cpp
@@ -3,6 +3,7 @@
 #include <QQuickStyle>
 #include <qbluetoothleuartclient.h>
 #include <QTranslator>
+#include <QFontDatabase>
 
 #include "omobidisplaybackend.h"
 #include "omobidisplaytextmodel.h"
@@ -11,11 +12,14 @@ int main(int argc, char *argv[])
 {
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 
+    QCoreApplication::setOrganizationName("Itsblue");
+    QCoreApplication::setOrganizationDomain("itsblue.de");
+    QCoreApplication::setApplicationName("Itsblue smart display");
+
     QGuiApplication app(argc, argv);
 
     QTranslator translator;
     translator.load(":/" + QLocale::system().name() + ".qm");
-    translator.load(":/de.qm");
     app.installTranslator(&translator);
 
     qmlRegisterType<OmobiDisplayBackend>("de.itsblue.omobidisplayapp", 1, 0, "OmobiDisplayBackend");
diff --git a/OmobiDisplayApp/omobidisplaybackend.cpp b/OmobiDisplayApp/omobidisplaybackend.cpp
index 393dc51..7a689ba 100644
--- a/OmobiDisplayApp/omobidisplaybackend.cpp
+++ b/OmobiDisplayApp/omobidisplaybackend.cpp
@@ -9,6 +9,8 @@ OmobiDisplayBackend::OmobiDisplayBackend(QObject *parent) : QObject(parent)
     this->displayBrightness = -1;
     this->waitingCommands = 0;
 
+    this->settings = new QSettings();
+
     this->keepAliveTimer = new QTimer(this);
     this->keepAliveTimer->setInterval(5000);
     this->keepAliveTimer->setSingleShot(false);
@@ -34,10 +36,15 @@ void OmobiDisplayBackend::startScanning() {
 void OmobiDisplayBackend::authenticate(QString code) {
     // tell display to send over existing model data
     this->setState(Authenticating);
-    QString combinedCode = this->bleClient->getCurrentDevice()->getAddress().toUpper() + code;
-    QString secret = QCryptographicHash::hash(combinedCode.toUtf8(), QCryptographicHash::Sha256).toHex();
 
-    this->sendBluetoothCommand(AuthorizeSessionCommand, QVariantMap{{"secret", secret}});
+    if(code.length() == 64)
+        this->lastDisplaySecret = code;
+    else if(code.length() == 4) {
+        QString combinedCode = this->bleClient->getCurrentDevice()->getAddress().toUpper() + code;
+        this->lastDisplaySecret = QCryptographicHash::hash(combinedCode.toUtf8(), QCryptographicHash::Sha256).toHex();
+    }
+
+    this->sendBluetoothCommand(AuthenticateCommand, QVariantMap{{"secret", this->lastDisplaySecret}});
 }
 
 void OmobiDisplayBackend::handleBluetoothStateChange(QBluetoothLeUartClient::BluetoothLeUartClientState state){
@@ -79,9 +86,10 @@ void OmobiDisplayBackend::handleBluetoothStateChange(QBluetoothLeUartClient::Blu
 }
 
 void OmobiDisplayBackend::handleBluetoothDeviceConected() {
-    this->setState(AuthenticationRequired);
-    this->authenticate("1234");
-    // TODO: stuff
+    if(this->settings->contains(this->bleClient->getCurrentDevice()->getAddress()))
+        this->authenticate(this->settings->value(this->bleClient->getCurrentDevice()->getAddress()).toString());
+    else
+        this->setState(AuthenticationRequired);
 }
 
 void OmobiDisplayBackend::handleFoundNewDevice(QBluetoothLeUartDevice* device) {
@@ -118,7 +126,7 @@ void OmobiDisplayBackend::sendBluetoothCommand(OmobiDisplayCommand command, QVar
 
     QJsonDocument doc = QJsonDocument::fromVariant(commandMap);
 
-    qDebug() << "Sending command: \n" << qPrintable(doc.toJson(QJsonDocument::Indented));
+    //qDebug() << "Sending command: \n" << qPrintable(doc.toJson(QJsonDocument::Indented));
 
     this->waitingCommands ++;
 
@@ -131,13 +139,13 @@ void OmobiDisplayBackend::sendBluetoothCommand(OmobiDisplayCommand command, QVar
 void OmobiDisplayBackend::sendBluetoothKeepAlive() {
     QJsonDocument doc = QJsonDocument::fromVariant(QVariantMap{{"header", KeepAliveCommand}});
 
-    qDebug() << "Sending keep alive: \n" << qPrintable(doc.toJson(QJsonDocument::Indented));
+    //qDebug() << "Sending keep alive: \n" << qPrintable(doc.toJson(QJsonDocument::Indented));
 
     this->bleClient->sendData(doc.toJson(QJsonDocument::Compact));
 }
 
 void OmobiDisplayBackend::handleBluetoothDataReceived(QString s){
-    qDebug() << "New data: \n" << qPrintable(s);
+    //qDebug() << "New data: \n" << qPrintable(s);
 
     QJsonParseError parseError;
     QJsonDocument doc = QJsonDocument::fromJson(s.toUtf8(), &parseError);
@@ -150,12 +158,15 @@ void OmobiDisplayBackend::handleBluetoothDataReceived(QString s){
     OmobiDisplayStatusCode status = OmobiDisplayStatusCode(doc.toVariant().toMap()["status"].toInt());
 
     switch (header) {
-    case AuthorizeSessionCommand: {
+    case AuthenticateCommand: {
         if(status != Success) {
             this->setState(AuthenticationRequired);
+            this->lastDisplaySecret = "";
             return;
         }
 
+        this->settings->setValue(this->bleClient->getCurrentDevice()->getAddress(), this->lastDisplaySecret);
+
         this->waitingCommands = 0;
         this->setState(Initing);
         this->sendBluetoothCommand(GetAllTextSetsCommand);
diff --git a/OmobiDisplayApp/omobidisplaybackend.h b/OmobiDisplayApp/omobidisplaybackend.h
index 8da8338..350aba4 100644
--- a/OmobiDisplayApp/omobidisplaybackend.h
+++ b/OmobiDisplayApp/omobidisplaybackend.h
@@ -5,6 +5,7 @@
 #include <QTimer>
 #include <QJsonDocument>
 #include <QCryptographicHash>
+#include <QSettings>
 
 #include <qbluetoothleuartclient.h>
 #include <omobidisplaytextmodel.h>
@@ -35,7 +36,7 @@ public:
 
 private:
     enum OmobiDisplayCommand {
-        AuthorizeSessionCommand = 0,
+        AuthenticateCommand = 0,
         KeepAliveCommand = 1,
         GetAllTextSetsCommand = 10,
         GetTextSetParameterCommand = 11,
@@ -59,6 +60,9 @@ private:
     QList<QMap<int, QVariant>> textSetsBuffer;
     int displayBrightness;
 
+    QSettings* settings;
+    QString lastDisplaySecret;
+
 public slots:
     Q_INVOKABLE void startScanning();
     Q_INVOKABLE void authenticate(QString secret);
diff --git a/OmobiDisplayApp/omobidisplaytextmodel.cpp b/OmobiDisplayApp/omobidisplaytextmodel.cpp
index d8ed150..169d15d 100644
--- a/OmobiDisplayApp/omobidisplaytextmodel.cpp
+++ b/OmobiDisplayApp/omobidisplaytextmodel.cpp
@@ -9,7 +9,6 @@ OmobiDisplayTextModel::OmobiDisplayTextModel(QObject* parent) : QAbstractListMod
     connect(this, &OmobiDisplayTextModel::rowsRemoved, this, &OmobiDisplayTextModel::rowCountChanged);
 }
 
-
 int OmobiDisplayTextModel::rowCount(const QModelIndex &) const
 {
     return this->texts.length();
diff --git a/OmobiDisplayApp/ressources/qml/ConnectPage.qml b/OmobiDisplayApp/ressources/qml/ConnectPage.qml
index a8d229c..991d307 100644
--- a/OmobiDisplayApp/ressources/qml/ConnectPage.qml
+++ b/OmobiDisplayApp/ressources/qml/ConnectPage.qml
@@ -16,6 +16,11 @@ Page {
 
     title: qsTr("Available displays")
 
+    signal opened()
+
+    onOpened: {
+    }
+
     ColumnLayout {
         id: mainLayout
         anchors {
@@ -114,6 +119,7 @@ Page {
             }
 
             Item {
+                id: noDisplaysItem
                 anchors.centerIn: parent
 
                 width: Math.min(parent.height, parent.width)
diff --git a/OmobiDisplayApp/ressources/qml/ConnectedPage.qml b/OmobiDisplayApp/ressources/qml/ConnectedPage.qml
index 9788b0b..f3399da 100644
--- a/OmobiDisplayApp/ressources/qml/ConnectedPage.qml
+++ b/OmobiDisplayApp/ressources/qml/ConnectedPage.qml
@@ -15,6 +15,8 @@ Page {
 
     title: backend.bleClient.currentDevice === null ? "":backend.bleClient.currentDevice.name
 
+    signal opened()
+
     function backButtonClicked() {
         backend.bleClient.disconnectFromDevice()
     }
@@ -50,15 +52,17 @@ Page {
                     Layout.fillHeight: true
                     verticalAlignment: Text.AlignVCenter
                     font.pixelSize: parent.height * 0.5
+                    font.family: fontAwesome.name
                     text: "\uf186"
                 }
 
                 Slider {
+                    id: brightnessSlider
                     Layout.fillWidth: true
                     Layout.fillHeight: true
 
                     from: 0
-                    to: 10
+                    to: 255
                     stepSize: 1
 
                     value: backend.displayBrightness
@@ -67,12 +71,19 @@ Page {
                         if(!pressed)
                             backend.displayBrightness = value
                     }
+
+                    ToolTip {
+                        parent: brightnessSlider.handle
+                        visible: brightnessSlider.pressed
+                        text: brightnessSlider.value.toFixed(1)
+                    }
                 }
 
                 Text {
                     Layout.fillHeight: true
                     verticalAlignment: Text.AlignVCenter
                     font.pixelSize: parent.height * 0.5
+                    font.family: fontAwesome.name
                     text: "\uf185"
                 }
             }
diff --git a/OmobiDisplayApp/ressources/qml/SpinBoxDelegate.qml b/OmobiDisplayApp/ressources/qml/SpinBoxDelegate.qml
index f8d8d98..4df3e3c 100644
--- a/OmobiDisplayApp/ressources/qml/SpinBoxDelegate.qml
+++ b/OmobiDisplayApp/ressources/qml/SpinBoxDelegate.qml
@@ -8,6 +8,7 @@ ItemDelegate {
     property string value: ""
     property alias from: spinBox.from
     property alias to: spinBox.to
+    property bool editable: false
 
     onClicked: {
         spinBox.value = control.value
@@ -67,6 +68,7 @@ ItemDelegate {
         contentItem: SpinBox {
             id: spinBox
             value: control.value
+            editable: control.editable
         }
 
         onAccepted: {
diff --git a/OmobiDisplayApp/ressources/qml/TextEditDialog.qml b/OmobiDisplayApp/ressources/qml/TextEditDialog.qml
index f248110..66b6a9f 100644
--- a/OmobiDisplayApp/ressources/qml/TextEditDialog.qml
+++ b/OmobiDisplayApp/ressources/qml/TextEditDialog.qml
@@ -82,6 +82,8 @@ Dialog {
             SpinBoxDelegate {
                 id: runtimeSpinBox
                 Layout.fillWidth: true
+                editable: true
+                to: 3600
                 text: qsTr("Runtime (in s)")
             }
 
@@ -107,7 +109,7 @@ Dialog {
             SpinBoxDelegate {
                 id: scrollSpeedSpinBox
                 Layout.fillWidth: true
-                from: 0
+                from: 1
                 to: 10
                 text: qsTr("Scroll speed")
             }
@@ -116,6 +118,7 @@ Dialog {
                 id: scrollCountSpinBox
                 Layout.fillWidth: true
                 from: 0
+                editable: true
                 text: qsTr("Scroll count")
             }
         }
diff --git a/OmobiDisplayApp/ressources/qml/main.qml b/OmobiDisplayApp/ressources/qml/main.qml
index 31f4139..24366e1 100644
--- a/OmobiDisplayApp/ressources/qml/main.qml
+++ b/OmobiDisplayApp/ressources/qml/main.qml
@@ -46,7 +46,7 @@ ApplicationWindow {
 
                     opacity: mainStack.currentItem.backButtonVisible ? 1:0
 
-                    font.styleName: fontAwesome.name
+                    font.family: fontAwesome.name
                     font.pixelSize: height * 0.6
                     Material.foreground: "black"
 
@@ -63,7 +63,7 @@ ApplicationWindow {
                     onClicked: mainStack.currentItem.backButtonClicked()
                 }
 
-                Text {
+                Label {
                     Layout.fillHeight: true
                     Layout.fillWidth: true
                     Layout.alignment: Layout.Center
@@ -71,6 +71,7 @@ ApplicationWindow {
                     verticalAlignment: Text.AlignVCenter
                     horizontalAlignment: Text.AlignHCenter
 
+                    color: "black"
                     text: mainStack.currentItem.title
                 }
 
@@ -82,7 +83,7 @@ ApplicationWindow {
 
                     opacity: mainStack.currentItem.actionButtonVisible ? 1:0
 
-                    font.styleName: fontAwesome.name
+                    font.family: fontAwesome.name
                     font.pixelSize: height * 0.4
                     Material.foreground: "black"
 
@@ -102,7 +103,11 @@ ApplicationWindow {
 
         FontLoader {
             id: fontAwesome
-            source: "qrc:/fa5regular.woff"
+            source: "qrc:/fa5solid.woff"
+
+            Component.onCompleted: {
+                console.log("Font name: " + fontAwesome.name)
+            }
         }
 
         StackView {
@@ -117,6 +122,10 @@ ApplicationWindow {
                     mainStack.replace(currentComponent)
             }
 
+            onCurrentItemChanged: {
+                currentItem.opened()
+            }
+
             initialItem: connectedPageComp
 
             replaceEnter: Transition {
diff --git a/OmobiDisplayApp/ressources/shared/fa5solid.woff b/OmobiDisplayApp/ressources/shared/fa5solid.woff
new file mode 100644
index 0000000..beec791
Binary files /dev/null and b/OmobiDisplayApp/ressources/shared/fa5solid.woff differ
diff --git a/OmobiDisplayApp/ressources/shared/shared.qrc b/OmobiDisplayApp/ressources/shared/shared.qrc
index 74f0f89..ca7d0d2 100644
--- a/OmobiDisplayApp/ressources/shared/shared.qrc
+++ b/OmobiDisplayApp/ressources/shared/shared.qrc
@@ -2,6 +2,6 @@
     <qresource prefix="/">
         <file>omobi.png</file>
         <file>itsblue.png</file>
-        <file>fa5regular.woff</file>
+        <file>fa5solid.woff</file>
     </qresource>
 </RCC>
diff --git a/OmobiDisplayApp/ressources/translations/de.qm b/OmobiDisplayApp/ressources/translations/de.qm
index 55c0917..981f93a 100644
Binary files a/OmobiDisplayApp/ressources/translations/de.qm and b/OmobiDisplayApp/ressources/translations/de.qm differ
diff --git a/OmobiDisplayApp/ressources/translations/de.ts b/OmobiDisplayApp/ressources/translations/de.ts
index 8ffc4b5..bce6f7c 100644
--- a/OmobiDisplayApp/ressources/translations/de.ts
+++ b/OmobiDisplayApp/ressources/translations/de.ts
@@ -76,7 +76,8 @@
     <message>
         <source>Display name
 (needs restart)</source>
-        <translation>Displayname\n(neutstart nötig)</translation>
+        <translation>Displayname
+(neutstart nötig)</translation>
     </message>
     <message>
         <source>Display code (4 digits)</source>