diff --git a/apps.cpp b/apps.cpp
index f4e21ef..f72697b 100644
--- a/apps.cpp
+++ b/apps.cpp
@@ -54,7 +54,7 @@ apps::apps(QWidget *parent) :
         }
     }
     // Hiding Light Maps if device doesn't have a working Wi-Fi adapter
-    if(global::device::isWifiAble == false and readFile("/opt/inkbox_device") != "emu\n") {
+    if(global::device::isWifiAble == false and global::deviceID != "emu\n") {
         ui->label_2->hide();
         ui->lightmapsLaunchBtn->hide();
         ui->label_2->deleteLater();
diff --git a/functions.h b/functions.h
index 43f3b22..a4c2438 100644
--- a/functions.h
+++ b/functions.h
@@ -125,6 +125,7 @@ namespace global {
     inline bool isN437;
     inline bool isN306;
     inline bool runningInstanceIsReaderOnly;
+    inline QString deviceID;
 }
 
 // https://stackoverflow.com/questions/6080853/c-multiple-definition-error-for-global-functions-in-the-header-file/20679534#20679534
@@ -299,8 +300,7 @@ namespace {
         fhandler.close();
     }
     int get_brightness() {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n613\n") {
+        if(global::deviceID == "n613\n") {
             string_checkconfig_ro(".config/03-brightness/config");
             int brightness;
             if(checkconfig_str_val == "") {
@@ -385,8 +385,7 @@ namespace {
         return 0;
     }
     void zeroBrightness() {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val != "n613\n") {
+        if(global::deviceID != "n613\n") {
             set_brightness(0);
         }
         else {
@@ -484,7 +483,7 @@ namespace {
     QString getConnectionInformation() {
         QString getIpProg ("sh");
         QStringList getIpArgs;
-        if(readFile("/opt/inkbox_device") != "n437\n") {
+        if(global::deviceID != "n437\n") {
             getIpArgs << "-c" << "/sbin/ifconfig eth0 | grep 'inet addr' | cut -d: -f2 | awk '{print $1}'";
         }
         else {
@@ -516,8 +515,7 @@ namespace {
         global::systemInfoText.append("<br><b>Kernel version:</b> ");
         global::systemInfoText.append(kernelVersion);
         global::systemInfoText.append("<br><b>Device:</b> ");
-        string_checkconfig_ro("/opt/inkbox_device");
-        QString device = checkconfig_str_val.trimmed();
+        QString device = global::deviceID.trimmed();
         global::systemInfoText.append(device);
         QString ipAddress = getConnectionInformation();
         global::systemInfoText.append("<br><b>IP address: </b>");
@@ -546,51 +544,47 @@ namespace {
          * 1: PDF
         */
         if(fileType == 0) {
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n") {
+            if(global::deviceID == "n705\n") {
                 defaultEpubPageHeight = 365;
                 defaultEpubPageWidth = 365;
             }
-            else if(checkconfig_str_val == "n905\n") {
+            else if(global::deviceID == "n905\n") {
                 defaultEpubPageHeight = 425;
                 defaultEpubPageWidth = 425;
             }
-            else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n" or checkconfig_str_val == "emu\n") {
+            else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n" or checkconfig_str_val == "emu\n") {
                 defaultEpubPageHeight = 450;
                 defaultEpubPageWidth = 450;
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 defaultEpubPageHeight = 525;
                 defaultEpubPageWidth = 525;
             }
         }
         else if(fileType == 1) {
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+            if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
                 defaultPdfPageHeight = 750;
                 defaultPdfPageWidth = 550;
             }
-            else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n" or checkconfig_str_val == "emu\n") {
+            else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n" or checkconfig_str_val == "emu\n") {
                 defaultPdfPageHeight = 974;
                 defaultPdfPageWidth = 708;
             }
-            else if(checkconfig_str_val == "n437\n") {
+            else if(global::deviceID == "n437\n") {
                 defaultPdfPageHeight = 1398;
                 defaultPdfPageWidth = 1022;
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 defaultPdfPageHeight = 1630;
                 defaultPdfPageWidth = 1214;
             }
         }
     }
     void pre_set_brightness(int brightnessValue) {
-        string_checkconfig_ro("/opt/inkbox_device");
-
-        if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n" or checkconfig_str_val == "n873\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+        if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "n873\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
             set_brightness(brightnessValue);
         }
-        else if(checkconfig_str_val == "n613\n") {
+        else if(global::deviceID == "n613\n") {
             set_brightness_ntxio(brightnessValue);
         }
         else {
@@ -653,8 +647,7 @@ namespace {
     }
     int get_warmth() {
         QString sysfsWarmthPath;
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n873\n") {
+        if(global::deviceID == "n873\n") {
             sysfsWarmthPath = "/sys/class/backlight/lm3630a_led/color";
         }
         string_checkconfig_ro(sysfsWarmthPath);
@@ -667,8 +660,7 @@ namespace {
         warmthValue = 10 - warmthValue;
         std::string warmthValueStr = std::to_string(warmthValue);
         std::string sysfsWarmthPath;
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n873\n") {
+        if(global::deviceID == "n873\n") {
             sysfsWarmthPath = "/sys/class/backlight/lm3630a_led/color";
         }
         string_writeconfig(sysfsWarmthPath, warmthValueStr);
diff --git a/generaldialog.cpp b/generaldialog.cpp
index ad288bd..26cde02 100644
--- a/generaldialog.cpp
+++ b/generaldialog.cpp
@@ -51,7 +51,7 @@ generalDialog::generalDialog(QWidget *parent) :
     ui->searchComboBox->setStyleSheet("font-size: 9pt");
 
     // Disabling "Online library" search if device doesn't have Wi-Fi
-    if(global::device::isWifiAble == false && readFile("/opt/inkbox_device") != "emu\n") {
+    if(global::device::isWifiAble == false && global::deviceID != "emu\n") {
         ui->searchComboBox->removeItem(2);
     }
 
@@ -76,7 +76,7 @@ generalDialog::generalDialog(QWidget *parent) :
             resetDialog = true;
             ui->okBtn->setText("Proceed");
             ui->cancelBtn->setText("Go back");
-            if(readFile("/opt/inkbox_device") != "n705\n") {
+            if(global::deviceID != "n705\n") {
                 ui->bodyLabel->setText("This will erase any books you have stored on the device.\nSettings will be reset.");
             }
             else {
diff --git a/koboxappsdialog.cpp b/koboxappsdialog.cpp
index 360acd1..b1c3ca9 100644
--- a/koboxappsdialog.cpp
+++ b/koboxappsdialog.cpp
@@ -26,8 +26,7 @@ koboxAppsDialog::koboxAppsDialog(QWidget *parent) :
     this->setStyleSheet(stylesheetFile.readAll());
     stylesheetFile.close();
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n") {
+    if(global::deviceID == "n705\n") {
         // If we don't do this, the text will clip out of the display.
         ui->definitionLabel->setText("Please select an application.\nClick on 'Launch' to start it.");
     }
@@ -98,17 +97,16 @@ void koboxAppsDialog::on_launchBtn_clicked()
         // DPI setting
         string_checkconfig(".config/00-kobox/dpiSetting");
         if(checkconfig_str_val == "") {
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+            if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
                 dpiSetting = "125";
             }
-            else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+            else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
                 dpiSetting = "175";
             }
-            else if(checkconfig_str_val == "n437\n") {
+            else if(global::deviceID == "n437\n") {
                 dpiSetting = "225";
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 dpiSetting = "250";
             }
             else {
@@ -131,17 +129,16 @@ void koboxAppsDialog::on_launchBtn_clicked()
         else if(itemText == "KTerm") {
             string_writeconfig("/external_root/tmp/X_program", "/usr/local/bin/kterm -l /usr/local/share/kterm/layouts/keyboard-kt.xml -k 1");
             dpModeSetting = "fullscreen";
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+            if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
                 dpiSetting = "175";
             }
-            else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+            else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
                 dpiSetting = "225";
             }
-            else if(checkconfig_str_val == "n437\n") {
+            else if(global::deviceID == "n437\n") {
                 dpiSetting = "275";
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 dpiSetting = "300";
             }
             else {
diff --git a/koboxsettings.cpp b/koboxsettings.cpp
index b1e0dc8..ffa059f 100644
--- a/koboxsettings.cpp
+++ b/koboxsettings.cpp
@@ -42,17 +42,16 @@ koboxSettings::koboxSettings(QWidget *parent) :
     QString dpiSetting;
     string_checkconfig(".config/00-kobox/dpiSetting");
     if(checkconfig_str_val == "") {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
             dpiSetting = "125";
         }
-        else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             dpiSetting = "175";
         }
-        else if(checkconfig_str_val == "n437\n") {
+        else if(global::deviceID == "n437\n") {
             dpiSetting = "225";
         }
-        else if(checkconfig_str_val == "n873\n") {
+        else if(global::deviceID == "n873\n") {
             dpiSetting = "250";
         }
         else {
diff --git a/librarywidget.cpp b/librarywidget.cpp
index d4ef757..ce2d47e 100644
--- a/librarywidget.cpp
+++ b/librarywidget.cpp
@@ -34,7 +34,7 @@ libraryWidget::libraryWidget(QWidget *parent) :
     }
     QFont crimson(family);
 
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->previousBtn->setText("");
         ui->previousBtn->setProperty("type", "borderless");
         ui->nextBtn->setText("");
@@ -62,7 +62,7 @@ libraryWidget::libraryWidget(QWidget *parent) :
     ui->book6Btn->setText("");
     ui->book7Btn->setText("");
     ui->book8Btn->setText("");
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->book9Btn->setText("");
         ui->book10Btn->setText("");
         ui->book11Btn->setText("");
@@ -98,7 +98,7 @@ libraryWidget::libraryWidget(QWidget *parent) :
     ui->book6Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
     ui->book7Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
     ui->book8Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->book9Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
         ui->book10Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
         ui->book11Label->setStyleSheet("font-size: 8.5pt; font-style: italic");
@@ -134,7 +134,7 @@ libraryWidget::libraryWidget(QWidget *parent) :
     ui->book6Label->setFont(crimson);
     ui->book7Label->setFont(crimson);
     ui->book8Label->setFont(crimson);
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->book9Label->setFont(crimson);
         ui->book10Label->setFont(crimson);
         ui->book11Label->setFont(crimson);
@@ -186,7 +186,7 @@ void libraryWidget::setupView() {
     ui->book6Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/6/title"));
     ui->book7Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/7/title"));
     ui->book8Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/8/title"));
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->book9Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/9/title"));
         ui->book10Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/10/title"));
         ui->book11Label->setText(readFile("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/11/title"));
@@ -213,7 +213,7 @@ void libraryWidget::setupView() {
     ui->book7Btn->setIconSize(QSize(stdIconWidth, stdIconHeight));
     ui->book8Btn->setIcon(QIcon("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/8/cover.jpg"));
     ui->book8Btn->setIconSize(QSize(stdIconWidth, stdIconHeight));
-    if(readFile("/opt/inkbox_device") != "n905\n") {
+    if(global::deviceID != "n905\n") {
         ui->book9Btn->setIcon(QIcon("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/9/cover.jpg"));
         ui->book9Btn->setIconSize(QSize(stdIconWidth, stdIconHeight));
         ui->book10Btn->setIcon(QIcon("/mnt/onboard/onboard/.inkbox/gutenberg-data/latest-books/10/cover.jpg"));
diff --git a/main.cpp b/main.cpp
index ffcc9dd..85bdc32 100644
--- a/main.cpp
+++ b/main.cpp
@@ -31,6 +31,7 @@
 
 int main(int argc, char *argv[])
 {
+    global::deviceID = readFile("/opt/inkbox_device");
     setDefaultWorkDir();
     if(checkconfig(".config/18-encrypted_storage/status") == true and checkconfig("/external_root/run/encfs_mounted") == false) {
         // Open Encryption Manager to unlock encrypted storage
@@ -58,8 +59,7 @@ int main(int argc, char *argv[])
         global::reader::startUsbmsPrompt = false;
 
         // Checking if battery level is critical; if true (and if it is not charging), then display a "Please charge your eReader" splash and power off.
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val != "emu\n") {
+        if(global::deviceID != "emu\n") {
             if(isBatteryCritical() == true) {
                 string_checkconfig_ro("/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/status");
                 if(checkconfig_str_val == "Charging\n") {
@@ -97,8 +97,7 @@ int main(int argc, char *argv[])
             global::reader::skipOpenDialog = true;
 
             string_writeconfig("/inkbox/skip_opendialog", "true");
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n") {
+            if(global::deviceID == "n705\n") {
                 global::isN705 = true;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -107,7 +106,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n905\n") {
+            else if(global::deviceID == "n905\n") {
                 global::isN705 = false;
                 global::isN905C = true;
                 global::isN613 = false;
@@ -116,7 +115,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n613\n") {
+            else if(global::deviceID == "n613\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = true;
@@ -124,7 +123,7 @@ int main(int argc, char *argv[])
                 global::isN236 = false;
                 global::isN437 = false;
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -132,7 +131,7 @@ int main(int argc, char *argv[])
                 global::isN236 = false;
                 global::isN437 = false;
             }
-            else if(checkconfig_str_val == "n236\n") {
+            else if(global::deviceID == "n236\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -141,7 +140,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n437\n") {
+            else if(global::deviceID == "n437\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -150,7 +149,7 @@ int main(int argc, char *argv[])
                 global::isN437 = true;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n306\n") {
+            else if(global::deviceID == "n306\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -184,8 +183,7 @@ int main(int argc, char *argv[])
             w.setStyleSheet(stylesheetFile.readAll());
             stylesheetFile.close();
 
-            string_checkconfig_ro("/opt/inkbox_device");
-            if(checkconfig_str_val == "n705\n") {
+            if(global::deviceID == "n705\n") {
                 global::isN705 = true;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -194,7 +192,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n905\n") {
+            else if(global::deviceID == "n905\n") {
                 global::isN705 = false;
                 global::isN905C = true;
                 global::isN613 = false;
@@ -203,7 +201,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n613\n") {
+            else if(global::deviceID == "n613\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = true;
@@ -212,7 +210,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n873\n") {
+            else if(global::deviceID == "n873\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -221,7 +219,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n236\n") {
+            else if(global::deviceID == "n236\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -230,7 +228,7 @@ int main(int argc, char *argv[])
                 global::isN437 = false;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n437\n") {
+            else if(global::deviceID == "n437\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
@@ -239,7 +237,7 @@ int main(int argc, char *argv[])
                 global::isN437 = true;
                 global::isN306 = false;
             }
-            else if(checkconfig_str_val == "n306\n") {
+            else if(global::deviceID == "n306\n") {
                 global::isN705 = false;
                 global::isN905C = false;
                 global::isN613 = false;
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 79110c9..81d6dac 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -73,8 +73,7 @@ MainWindow::MainWindow(QWidget *parent)
     sH = QGuiApplication::screens()[0]->size().height();
 
     // Defining what the default icon size will be
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n") {
+    if(global::deviceID == "n705\n") {
         stdIconWidth = sW / 12;
         stdIconHeight = sH / 12;
         brightnessIconWidth = sW / 24;
@@ -84,7 +83,7 @@ MainWindow::MainWindow(QWidget *parent)
         wifiIconWidth = sW / 20.5;
         wifiIconHeight = sH / 20.5;
     }
-    else if(checkconfig_str_val == "n905\n") {
+    else if(global::deviceID == "n905\n") {
         stdIconWidth = sW / 14;
         stdIconHeight = sH / 14;
         brightnessIconWidth = sW / 26;
@@ -94,7 +93,7 @@ MainWindow::MainWindow(QWidget *parent)
         wifiIconWidth = sW / 22.5;
         wifiIconHeight = sH / 22.5;
     }
-    else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n" or checkconfig_str_val == "emu\n") {
+    else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n" or global::deviceID == "emu\n") {
         stdIconWidth = sW / 12.5;
         stdIconHeight = sH / 12.5;
         brightnessIconWidth = sW / 24.5;
@@ -158,14 +157,13 @@ MainWindow::MainWindow(QWidget *parent)
     ui->wifiBtn->setStyleSheet("font-size: 9pt; padding-bottom: 0px; padding-top: 0px; padding-left: 8px; padding-right: 8px");
 
     // Checking if we have a Mini or Touch there
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
         ui->batteryIcon->setStyleSheet("font-size: 5pt; padding-bottom: 0px; padding-top: 0px; padding-left: 1px; padding-right: 1px;");
     }
-    else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n" or checkconfig_str_val == "emu\n") {
+    else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n" or global::deviceID == "emu\n") {
         ui->batteryIcon->setStyleSheet("font-size: 5pt; padding-bottom: 0px; padding-top: 0px; padding-left: 0px; padding-right: 0px;");
     }
-    else if(checkconfig_str_val == "n873\n") {
+    else if(global::deviceID == "n873\n") {
         ui->batteryIcon->setStyleSheet("font-size: 5pt; padding-bottom: 0px; padding-top: 0px; padding-left: 0px; padding-right: 0px;");
     }
     else {
@@ -187,7 +185,7 @@ MainWindow::MainWindow(QWidget *parent)
 
     // Deleting/Hiding "Library" button if device is not WiFi-able
     // NOTE: Using deleteLater() on these elements causes a segmentation fault and aborts the whole program when the Settings, Apps or Home button is pressed. No idea why.
-    if(global::device::isWifiAble == false && readFile("/opt/inkbox_device") != "emu\n") {
+    if(global::device::isWifiAble == false && global::deviceID != "emu\n") {
         ui->libraryButton->hide();
         ui->line_10->hide();
     }
@@ -784,10 +782,9 @@ void MainWindow::resetIcons() {
 
 void MainWindow::setBatteryIcon() {
     // Battery
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n873\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n873\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
         // Hide brightness controls; they won't be very useful there anyway (for anything but the Glo (HD)/Libra/Aura 2) ...
-        if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
             ui->brightnessBtn->hide();
             ui->line_7->hide();
         }
@@ -855,8 +852,7 @@ void MainWindow::setBatteryIcon() {
 }
 
 void MainWindow::setInitialBrightness() {
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n873\n") {
+    if(global::deviceID == "n873\n") {
         int warmth;
         string_checkconfig_ro(".config/03-brightness/config-warmth");
         if(checkconfig_str_val == "") {
@@ -939,7 +935,7 @@ bool MainWindow::checkWifiState() {
      * true: interface UP
      * false: interface DOWN
     */
-    if(readFile("/opt/inkbox_device") == "n437\n") {
+    if(global::deviceID == "n437\n") {
         string_checkconfig_ro("/sys/class/net/wlan0/operstate");
     }
     else {
@@ -1137,10 +1133,10 @@ void MainWindow::resetFullWindow() {
 }
 
 void MainWindow::setRecentBooksLabelsTruncateTreshold() {
-    if(readFile("/opt/inkbox_device") == "n705\n" or readFile("/opt/inkbox_device") == "n905b\n" or readFile("/opt/inkbox_device") == "n905c\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905b\n" or global::deviceID == "n905c\n") {
         truncateTreshold = 12;
     }
-    else if(readFile("/opt/inkbox_device") == "n613\n" or readFile("/opt/inkbox_device") == "n873\n" or readFile("/opt/inkbox_device") == "n236\n" or readFile("/opt/inkbox_device") == "n437\n" or readFile("/opt/inkbox_device") == "n306\n"){
+    else if(global::deviceID == "n613\n" or global::deviceID == "n873\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n"){
         truncateTreshold = 20;
     }
     else {
diff --git a/reader.cpp b/reader.cpp
index c31e0bb..8851d88 100644
--- a/reader.cpp
+++ b/reader.cpp
@@ -105,7 +105,7 @@ reader::reader(QWidget *parent) :
     ui->quitBtn->setIcon(QIcon(":/resources/power.png"));
 
     // On the Mini with QT_FONT_DPI set to 187 (default for this device), quitBtn makes the UI go beyond the limits of the screen when the menu bar is shown
-    if(readFile("/opt/inkbox_device") == "n705\n") {
+    if(global::deviceID == "n705\n") {
         ui->quitBtn->hide();
         ui->quitBtn->deleteLater();
         ui->line_19->hide();
@@ -268,8 +268,7 @@ reader::reader(QWidget *parent) :
         }
     }
     // Night mode
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
         if(checkconfig(".config/10-dark_mode/config") == true) {
             string_writeconfig("/tmp/invertScreen", "y");
             ui->nightModeBtn->setText("");
@@ -290,8 +289,7 @@ reader::reader(QWidget *parent) :
         ui->nightModeBtn->deleteLater();
     }
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n873\n") {
+    if(global::deviceID == "n873\n") {
         ui->nextBtn->setStyleSheet("padding: 13.5px");
         ui->previousBtn->setStyleSheet("padding: 13.5px");
         ui->optionsBtn->setStyleSheet("padding: 13.5px");
@@ -348,8 +346,7 @@ reader::reader(QWidget *parent) :
     float sH = QGuiApplication::screens()[0]->size().height();
     // Defining what the icons' size will be
     if(checkconfig("/opt/inkbox_genuine") == true) {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n" or checkconfig_str_val == "emu\n") {
+        if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n" or checkconfig_str_val == "emu\n") {
             float stdIconWidth = sW / 16;
             float stdIconHeight = sW / 16;
             QPixmap chargingPixmap(":/resources/battery_charging.png");
@@ -528,6 +525,8 @@ reader::reader(QWidget *parent) :
         setupPng();
     }
     else {
+        ui->graphicsView->hide();
+        ui->graphicsView->deleteLater();
         ui->text->setText(ittext);
     }
 
@@ -567,11 +566,10 @@ reader::reader(QWidget *parent) :
         infoLabelContent.append(bookTitle);
         int infoLabelLength = infoLabelContent.length();
         int infoLabelDefinedLength;
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             infoLabelDefinedLength = 35;
         }
-        else if(checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+        else if(global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
             infoLabelDefinedLength = 50;
         }
         else {
@@ -597,10 +595,10 @@ reader::reader(QWidget *parent) :
         }
 
         int infoLabelDefinedLength;
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             infoLabelDefinedLength = 35;
         }
-        else if(checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+        else if(global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
             infoLabelDefinedLength = 50;
         }
         else {
@@ -725,8 +723,7 @@ reader::reader(QWidget *parent) :
                 }
             }
         } );
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val != "emu\n") {
+        if(global::deviceID != "emu\n") {
             t->start();
         }
     }
@@ -1126,7 +1123,7 @@ void reader::on_optionsBtn_clicked()
 {
     if(menubar_shown == true) {
         menubar_hide();
-        if(readFile("/opt/inkbox_device") == "n873\n") {
+        if(global::deviceID == "n873\n") {
             ui->optionsBtn->setStyleSheet("background: white; color: black; padding: 13.5px");
         }
         else {
@@ -1137,7 +1134,7 @@ void reader::on_optionsBtn_clicked()
     }
     else {
         menubar_show();
-        if(readFile("/opt/inkbox_device") == "n873\n") {
+        if(global::deviceID == "n873\n") {
             ui->optionsBtn->setStyleSheet("background: black; color: white; padding: 13.5px");
         }
         else {
@@ -1412,8 +1409,7 @@ void reader::menubar_show() {
         ui->pageWidget->setVisible(true);
     }
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
         ;
     }
     else {
@@ -1424,8 +1420,7 @@ void reader::menubar_show() {
 }
 
 void reader::menubar_hide() {
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
         ui->brightnessWidget->setVisible(false);
     }
     else {
diff --git a/resources/eink-dark.qss b/resources/eink-dark.qss
index ed0d1a5..79c7de5 100644
--- a/resources/eink-dark.qss
+++ b/resources/eink-dark.qss
@@ -347,10 +347,10 @@ border: 5px solid lightGrey;
 }
 
 QScrollBar:vertical {
-    width: 25px
+    width: 30px
 }
 QScrollBar:horizontal {
-    height: 25px
+    height: 30px
 }
 QScrollBar::handle {
     background: black;
diff --git a/resources/eink.qss b/resources/eink.qss
index c8feac2..cfd458a 100644
--- a/resources/eink.qss
+++ b/resources/eink.qss
@@ -350,10 +350,10 @@ QScrollBar {
 }
 
 QScrollBar:vertical {
-    width: 25px
+    width: 30px
 }
 QScrollBar:horizontal {
-    height: 25px
+    height: 30px
 }
 QScrollBar::handle {
     background: black;
diff --git a/settings.cpp b/settings.cpp
index da03c0a..f96a757 100644
--- a/settings.cpp
+++ b/settings.cpp
@@ -98,8 +98,7 @@ settings::settings(QWidget *parent) :
         ui->quoteCheckBox->click();
     }
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n" or checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n437\n" or checkconfig_str_val == "n306\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n" or global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n437\n" or global::deviceID == "n306\n") {
         if(checkconfig(".config/10-dark_mode/config") == true) {
             ui->darkModeCheckBox->click();
         }
@@ -163,8 +162,7 @@ settings::settings(QWidget *parent) :
     else {
         int dpi_number = checkconfig_str_val.toInt();
         // Checking if it's a Mini, Touch or a Glo
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             if(dpi_number == 187) {
                 ui->uiScalingSlider->setValue(0);
             }
@@ -175,7 +173,7 @@ settings::settings(QWidget *parent) :
                 ui->uiScalingSlider->setValue(2);
             }
         }
-        else if(checkconfig_str_val == "n905\n") {
+        else if(global::deviceID == "n905\n") {
             if(dpi_number == 160) {
                 ui->uiScalingSlider->setValue(0);
             }
@@ -186,7 +184,7 @@ settings::settings(QWidget *parent) :
                 ui->uiScalingSlider->setValue(2);
             }
         }
-        else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             if(dpi_number == 195) {
                 ui->uiScalingSlider->setValue(0);
             }
@@ -197,7 +195,7 @@ settings::settings(QWidget *parent) :
                 ui->uiScalingSlider->setValue(2);
             }
         }
-        else if(checkconfig_str_val == "n437\n") {
+        else if(global::deviceID == "n437\n") {
             if(dpi_number == 275) {
                 ui->uiScalingSlider->setValue(0);
             }
@@ -208,7 +206,7 @@ settings::settings(QWidget *parent) :
                 ui->uiScalingSlider->setValue(2);
             }
         }
-        else if(checkconfig_str_val == "n873\n") {
+        else if(global::deviceID == "n873\n") {
             if(dpi_number == 285) {
                 ui->uiScalingSlider->setValue(0);
             }
@@ -599,56 +597,53 @@ void settings::on_darkModeCheckBox_toggled(bool checked)
 void settings::on_uiScalingSlider_valueChanged(int value)
 {
     if(value == 0) {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             string_writeconfig(".config/09-dpi/config", "187");
         }
-        if(checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n905\n") {
             string_writeconfig(".config/09-dpi/config", "160");
         }
-        if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             string_writeconfig(".config/09-dpi/config", "195");
         }
-        if(checkconfig_str_val == "n437\n") {
+        if(global::deviceID == "n437\n") {
             string_writeconfig(".config/09-dpi/config", "275");
         }
-        if(checkconfig_str_val == "n873\n") {
+        if(global::deviceID == "n873\n") {
             string_writeconfig(".config/09-dpi/config", "285");
         }
     }
     if(value == 1) {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             string_writeconfig(".config/09-dpi/config", "214");
         }
-        if(checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n905\n") {
             string_writeconfig(".config/09-dpi/config", "187");
         }
-        if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             string_writeconfig(".config/09-dpi/config", "210");
         }
-        if(checkconfig_str_val == "n437\n") {
+        if(global::deviceID == "n437\n") {
             string_writeconfig(".config/09-dpi/config", "290");
         }
-        if(checkconfig_str_val == "n873\n") {
+        if(global::deviceID == "n873\n") {
             string_writeconfig(".config/09-dpi/config", "300");
         }
     }
     if(value == 2) {
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             string_writeconfig(".config/09-dpi/config", "227");
         }
-        if(checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n905\n") {
             string_writeconfig(".config/09-dpi/config", "200");
         }
-        if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             string_writeconfig(".config/09-dpi/config", "225");
         }
-        if(checkconfig_str_val == "n437\n") {
+        if(global::deviceID == "n437\n") {
             string_writeconfig(".config/09-dpi/config", "305");
         }
-        if(checkconfig_str_val == "n873\n") {
+        if(global::deviceID == "n873\n") {
             string_writeconfig(".config/09-dpi/config", "315");
         }
     }
@@ -741,20 +736,19 @@ void settings::on_enableUiScalingCheckBox_toggled(bool checked)
 {
     if(checked == true) {
         // Writing default value depending on the device
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n705\n") {
+        if(global::deviceID == "n705\n") {
             string_writeconfig(".config/09-dpi/config", "187");
         }
-        else if(checkconfig_str_val == "n905\n") {
+        else if(global::deviceID == "n905\n") {
             string_writeconfig(".config/09-dpi/config", "160");
         }
-        else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+        else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
             string_writeconfig(".config/09-dpi/config", "195");
         }
-        else if(checkconfig_str_val == "n437\n") {
+        else if(global::deviceID == "n437\n") {
             string_writeconfig(".config/09-dpi/config", "275");
         }
-        else if(checkconfig_str_val == "n873\n") {
+        else if(global::deviceID == "n873\n") {
             string_writeconfig(".config/09-dpi/config", "285");
         }
         else {
diff --git a/settingschooser.cpp b/settingschooser.cpp
index 2fdda45..381e788 100644
--- a/settingschooser.cpp
+++ b/settingschooser.cpp
@@ -28,8 +28,7 @@ settingsChooser::settingsChooser(QWidget *parent) :
     sH = QGuiApplication::screens()[0]->size().height();
 
     // Defining what the default icon size will be
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n") {
+    if(global::deviceID == "n705\n") {
         homeIconWidth = sW / 18;
         homeIconHeight = sW / 18;
     }
@@ -41,12 +40,11 @@ settingsChooser::settingsChooser(QWidget *parent) :
     ui->inkboxSettingsBtn->setProperty("type", "borderless");
     ui->koboxSettingsBtn->setProperty("type", "borderless");
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n705\n" or checkconfig_str_val == "n905\n") {
+    if(global::deviceID == "n705\n" or global::deviceID == "n905\n") {
         ui->inkboxSettingsBtn->setStyleSheet("padding: 20px; Text-align: left");
         ui->koboxSettingsBtn->setStyleSheet("padding: 20px; Text-align: left");
     }
-    else if(checkconfig_str_val == "n613\n" or checkconfig_str_val == "n236\n" or checkconfig_str_val == "n306\n") {
+    else if(global::deviceID == "n613\n" or global::deviceID == "n236\n" or global::deviceID == "n306\n") {
         ui->inkboxSettingsBtn->setStyleSheet("padding: 25px; Text-align: left");
         ui->koboxSettingsBtn->setStyleSheet("padding:25px; Text-align: left");
     }
diff --git a/usbms_splash.cpp b/usbms_splash.cpp
index f683772..2067278 100644
--- a/usbms_splash.cpp
+++ b/usbms_splash.cpp
@@ -32,8 +32,7 @@ usbms_splash::usbms_splash(QWidget *parent) :
         ui->label->setText("Launching KoBox subsystem");
         ui->label->setStyleSheet("font-size: 14pt");
         ui->label_3->setText("Please wait, this could take a while.");
-        string_checkconfig_ro("/opt/inkbox_device");
-        if(checkconfig_str_val == "n905\n") {
+        if(global::deviceID == "n905\n") {
             ui->label_3->setStyleSheet("font-size: 11pt");
         }
         else {
@@ -83,7 +82,7 @@ void usbms_splash::usbms_launch()
     string_writeconfig("/opt/ibxd", "usbnet_stop\n");
     QThread::msleep(1000);
 
-    if(readFile("/opt/inkbox_device") == "n306\n" or readFile("/opt/inkbox_device") == "n873\n") {
+    if(global::deviceID == "n306\n" or global::deviceID == "n873\n") {
         QProcess::execute("insmod", QStringList() << "/external_root/modules/fs/configfs/configfs.ko");
         QProcess::execute("insmod", QStringList() << "/external_root/modules/drivers/usb/gadget/libcomposite.ko");
         QProcess::execute("insmod", QStringList() << "/external_root/modules/drivers/usb/gadget/function/usb_f_mass_storage.ko");
diff --git a/virtualkeyboard.cpp b/virtualkeyboard.cpp
index f33c678..b1f643f 100644
--- a/virtualkeyboard.cpp
+++ b/virtualkeyboard.cpp
@@ -54,8 +54,7 @@ virtualkeyboard::virtualkeyboard(QWidget *parent) :
     ui->spt->setProperty("type", "borderless");
     ui->sat->setProperty("type", "borderless");
 
-    string_checkconfig_ro("/opt/inkbox_device");
-    if(checkconfig_str_val == "n873\n") {
+    if(global::deviceID == "n873\n") {
         ui->n1->setStyleSheet("font-weight: bold; font-size: 9pt; padding: 27px");
         ui->n2->setStyleSheet("font-weight: bold; font-size: 9pt; padding: 27px");
         ui->n3->setStyleSheet("font-weight: bold; font-size: 9pt; padding: 27px");