diff --git a/drongo b/drongo
index 04667558..15beeefc 160000
--- a/drongo
+++ b/drongo
@@ -1 +1 @@
-Subproject commit 0466755883c19a9e679f5e937b2f7db55a73e05b
+Subproject commit 15beeefcb687c77adddbfe5e2b74c75b2c6f2196
diff --git a/src/main/java/com/sparrowwallet/sparrow/AppController.java b/src/main/java/com/sparrowwallet/sparrow/AppController.java
index b2f599d2..9e680ef2 100644
--- a/src/main/java/com/sparrowwallet/sparrow/AppController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/AppController.java
@@ -48,6 +48,7 @@ import java.io.*;
 import java.net.URL;
 import java.text.ParseException;
 import java.util.*;
+import java.util.stream.Collectors;
 
 public class AppController implements Initializable {
     private static final int SERVER_PING_PERIOD = 10 * 1000;
@@ -107,6 +108,8 @@ public class AppController implements Initializable {
 
     private static CurrencyRate fiatCurrencyExchangeRate;
 
+    private static List<Device> devices;
+
     @Override
     public void initialize(URL location, ResourceBundle resources) {
         EventManager.get().register(this);
@@ -409,6 +412,10 @@ public class AppController implements Initializable {
         return fiatCurrencyExchangeRate;
     }
 
+    public static List<Device> getDevices() {
+        return devices;
+    }
+
     public Map<Wallet, Storage> getOpenWallets() {
         Map<Wallet, Storage> openWallets = new LinkedHashMap<>();
 
@@ -628,7 +635,15 @@ public class AppController implements Initializable {
                 enumerateService.setPeriod(new Duration(ENUMERATE_HW_PERIOD));
                 enumerateService.setOnSucceeded(workerStateEvent -> {
                     List<Device> devices = enumerateService.getValue();
-                    EventManager.get().post(new UsbDeviceEvent(devices));
+
+                    //Null devices are returned if the app is currently prompting for a pin. Otherwise, the enumerate clears the pin screen
+                    if(devices != null) {
+                        //If another instance of HWI is currently accessing the usb interface, HWI returns empty device models. Ignore this run if that happens
+                        List<Device> validDevices = devices.stream().filter(device -> device.getModel() != null).collect(Collectors.toList());
+                        if(validDevices.size() == devices.size()) {
+                            EventManager.get().post(new UsbDeviceEvent(devices));
+                        }
+                    }
                 });
                 enumerateService.start();
             }
@@ -836,6 +851,8 @@ public class AppController implements Initializable {
 
     @Subscribe
     public void usbDevicesFound(UsbDeviceEvent event) {
+        devices = Collections.unmodifiableList(event.getDevices());
+
         UsbStatusButton usbStatus = null;
         for(Node node : statusBar.getRightItems()) {
             if(node instanceof UsbStatusButton) {
diff --git a/src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java b/src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java
index b1982858..342b6491 100644
--- a/src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java
+++ b/src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java
@@ -3,11 +3,13 @@ package com.sparrowwallet.sparrow.control;
 import com.sparrowwallet.drongo.ExtendedKey;
 import com.sparrowwallet.drongo.KeyDerivation;
 import com.sparrowwallet.drongo.crypto.ChildNumber;
+import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.wallet.Keystore;
 import com.sparrowwallet.drongo.wallet.KeystoreSource;
 import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.KeystoreImportEvent;
+import com.sparrowwallet.sparrow.event.PSBTSignedEvent;
 import com.sparrowwallet.sparrow.io.Device;
 import com.sparrowwallet.sparrow.io.Hwi;
 import com.sparrowwallet.drongo.wallet.WalletModel;
@@ -32,6 +34,7 @@ import java.util.List;
 public class DevicePane extends TitledDescriptionPane {
     private final DeviceOperation deviceOperation;
     private final Wallet wallet;
+    private final PSBT psbt;
     private final Device device;
 
     private CustomPasswordField pinField;
@@ -39,6 +42,7 @@ public class DevicePane extends TitledDescriptionPane {
     private Button enterPinButton;
     private Button setPassphraseButton;
     private SplitMenuButton importButton;
+    private Button signButton;
 
     private final SimpleStringProperty passphrase = new SimpleStringProperty("");
 
@@ -46,6 +50,7 @@ public class DevicePane extends TitledDescriptionPane {
         super(device.getModel().toDisplayString(), "", "", "image/" + device.getType() + ".png");
         this.deviceOperation = deviceOperation;
         this.wallet = wallet;
+        this.psbt = null;
         this.device = device;
 
         setDefaultStatus();
@@ -65,6 +70,30 @@ public class DevicePane extends TitledDescriptionPane {
         buttonBox.getChildren().addAll(setPassphraseButton, importButton);
     }
 
+    public DevicePane(DeviceOperation deviceOperation, PSBT psbt, Device device) {
+        super(device.getModel().toDisplayString(), "", "", "image/" + device.getType() + ".png");
+        this.deviceOperation = deviceOperation;
+        this.wallet = null;
+        this.psbt = psbt;
+        this.device = device;
+
+        setDefaultStatus();
+        showHideLink.setVisible(false);
+
+        createSetPassphraseButton();
+        createSignButton();
+
+        if (device.getNeedsPinSent() != null && device.getNeedsPinSent()) {
+            unlockButton.setVisible(true);
+        } else if(device.getNeedsPassphraseSent() != null && device.getNeedsPassphraseSent()) {
+            setPassphraseButton.setVisible(true);
+        } else {
+            showOperationButton();
+        }
+
+        buttonBox.getChildren().addAll(setPassphraseButton, signButton);
+    }
+
     @Override
     protected Control createButton() {
         createUnlockButton();
@@ -100,6 +129,7 @@ public class DevicePane extends TitledDescriptionPane {
 
     private void createImportButton() {
         importButton = new SplitMenuButton();
+        importButton.getStyleClass().add("default-button");
         importButton.setAlignment(Pos.CENTER_RIGHT);
         importButton.setText("Import Keystore");
         importButton.setOnAction(event -> {
@@ -120,6 +150,18 @@ public class DevicePane extends TitledDescriptionPane {
         importButton.setVisible(false);
     }
 
+    private void createSignButton() {
+        signButton = new Button("Sign");
+        signButton.setDefaultButton(true);
+        signButton.setAlignment(Pos.CENTER_RIGHT);
+        signButton.setOnAction(event -> {
+            signButton.setDisable(true);
+            sign();
+        });
+        signButton.managedProperty().bind(signButton.visibleProperty());
+        signButton.setVisible(false);
+    }
+
     private void unlock(Device device) {
         if(device.getModel().equals(WalletModel.TREZOR_1)) {
             promptPin();
@@ -227,7 +269,7 @@ public class DevicePane extends TitledDescriptionPane {
                 }
             } else {
                 setError("Incorrect PIN", null);
-                enterPinButton.setDisable(false);
+                unlockButton.setDisable(false);
                 if(pinField != null) {
                     pinField.setText("");
                 }
@@ -315,14 +357,28 @@ public class DevicePane extends TitledDescriptionPane {
         getXpubService.start();
     }
 
+    private void sign() {
+        Hwi.SignPSBTService signPSBTService = new Hwi.SignPSBTService(device, passphrase.get(), psbt);
+        signPSBTService.setOnSucceeded(workerStateEvent -> {
+            PSBT signedPsbt = signPSBTService.getValue();
+            EventManager.get().post(new PSBTSignedEvent(psbt, signedPsbt));
+        });
+        signPSBTService.setOnFailed(workerStateEvent -> {
+            setError(signPSBTService.getException().getMessage(), null);
+            signButton.setDisable(false);
+        });
+        signPSBTService.start();
+    }
+
     private void showOperationButton() {
         if(deviceOperation.equals(DeviceOperation.IMPORT)) {
             importButton.setVisible(true);
             showHideLink.setText("Show derivation...");
             showHideLink.setVisible(true);
             setContent(getDerivationEntry(wallet.getScriptType().getDefaultDerivation()));
-        } else {
-            //TODO: Support further device operations such as signing
+        } else if(deviceOperation.equals(DeviceOperation.SIGN)) {
+            signButton.setVisible(true);
+            showHideLink.setVisible(false);
         }
     }
 
@@ -363,6 +419,6 @@ public class DevicePane extends TitledDescriptionPane {
     }
 
     public enum DeviceOperation {
-        IMPORT;
+        IMPORT, SIGN;
     }
 }
diff --git a/src/main/java/com/sparrowwallet/sparrow/control/DeviceSignDialog.java b/src/main/java/com/sparrowwallet/sparrow/control/DeviceSignDialog.java
new file mode 100644
index 00000000..c93c2d03
--- /dev/null
+++ b/src/main/java/com/sparrowwallet/sparrow/control/DeviceSignDialog.java
@@ -0,0 +1,127 @@
+package com.sparrowwallet.sparrow.control;
+
+import com.google.common.eventbus.Subscribe;
+import com.sparrowwallet.drongo.psbt.PSBT;
+import com.sparrowwallet.sparrow.AppController;
+import com.sparrowwallet.sparrow.EventManager;
+import com.sparrowwallet.sparrow.event.PSBTSignedEvent;
+import com.sparrowwallet.sparrow.glyphfont.FontAwesome5Brands;
+import com.sparrowwallet.sparrow.io.Device;
+import com.sparrowwallet.sparrow.io.Hwi;
+import javafx.event.ActionEvent;
+import javafx.geometry.Pos;
+import javafx.scene.control.*;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.StackPane;
+import javafx.scene.layout.VBox;
+import org.controlsfx.glyphfont.Glyph;
+
+import java.util.List;
+
+public class DeviceSignDialog extends Dialog<PSBT> {
+    private final PSBT psbt;
+    private final Accordion deviceAccordion;
+    private final VBox scanBox;
+    private final Label scanLabel;
+
+    public DeviceSignDialog(PSBT psbt) {
+        this.psbt = psbt;
+
+        EventManager.get().register(this);
+
+        final DialogPane dialogPane = getDialogPane();
+        dialogPane.getStylesheets().add(AppController.class.getResource("general.css").toExternalForm());
+
+        StackPane stackPane = new StackPane();
+        dialogPane.setContent(stackPane);
+
+        AnchorPane anchorPane = new AnchorPane();
+        ScrollPane scrollPane = new ScrollPane();
+        scrollPane.setPrefHeight(280);
+        scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
+        anchorPane.getChildren().add(scrollPane);
+        scrollPane.setFitToWidth(true);
+        AnchorPane.setLeftAnchor(scrollPane, 0.0);
+        AnchorPane.setRightAnchor(scrollPane, 0.0);
+
+        deviceAccordion = new Accordion();
+        scrollPane.setContent(deviceAccordion);
+
+        scanBox = new VBox();
+        scanBox.setSpacing(30);
+        scanBox.setAlignment(Pos.CENTER);
+        Glyph usb = new Glyph(FontAwesome5Brands.FONT_NAME, FontAwesome5Brands.Glyph.USB);
+        usb.setFontSize(50);
+        scanLabel = new Label("Connect Hardware Wallet");
+        Button button = new Button("Scan...");
+        button.setPrefSize(120, 60);
+        button.setOnAction(event -> {
+            scan();
+        });
+        scanBox.getChildren().addAll(usb, scanLabel, button);
+        scanBox.managedProperty().bind(scanBox.visibleProperty());
+
+        stackPane.getChildren().addAll(anchorPane, scanBox);
+
+        List<Device> devices = AppController.getDevices();
+        if(devices == null || devices.isEmpty()) {
+            scanBox.setVisible(true);
+        } else {
+            setDevices(devices);
+            scanBox.setVisible(false);
+        }
+
+        final ButtonType rescanButtonType = new javafx.scene.control.ButtonType("Rescan", ButtonBar.ButtonData.NO);
+        final ButtonType cancelButtonType = new javafx.scene.control.ButtonType("Cancel", ButtonBar.ButtonData.CANCEL_CLOSE);
+        dialogPane.getButtonTypes().addAll(rescanButtonType, cancelButtonType);
+
+        Button rescanButton = (Button) dialogPane.lookupButton(rescanButtonType);
+        rescanButton.managedProperty().bind(rescanButton.visibleProperty());
+        rescanButton.visibleProperty().bind(scanBox.visibleProperty().not());
+        rescanButton.addEventFilter(ActionEvent.ACTION, event -> {
+            scan();
+            event.consume();
+        });
+
+        dialogPane.setPrefWidth(500);
+        dialogPane.setPrefHeight(360);
+
+        setResultConverter(dialogButton -> dialogButton != cancelButtonType ? psbt : null);
+    }
+
+    private void scan() {
+        Hwi.EnumerateService enumerateService = new Hwi.EnumerateService(null);
+        enumerateService.setOnSucceeded(workerStateEvent -> {
+            List<Device> devices = enumerateService.getValue();
+            setDevices(devices);
+        });
+        enumerateService.setOnFailed(workerStateEvent -> {
+            scanBox.setVisible(true);
+            scanLabel.setText(workerStateEvent.getSource().getException().getMessage());
+        });
+        enumerateService.start();
+    }
+
+    private void setDevices(List<Device> devices) {
+        deviceAccordion.getPanes().clear();
+
+        if(devices.isEmpty()) {
+            scanBox.setVisible(true);
+            scanLabel.setText("No devices found");
+        } else {
+            scanBox.setVisible(false);
+            for(Device device : devices) {
+                DevicePane devicePane = new DevicePane(DevicePane.DeviceOperation.SIGN, psbt, device);
+                deviceAccordion.getPanes().add(devicePane);
+            }
+        }
+    }
+
+    @Subscribe
+    public void psbtSigned(PSBTSignedEvent event) {
+        if(psbt == event.getPsbt()) {
+            setResult(event.getSignedPsbt());
+            this.close();
+        }
+    }
+}
diff --git a/src/main/java/com/sparrowwallet/sparrow/event/PSBTSignedEvent.java b/src/main/java/com/sparrowwallet/sparrow/event/PSBTSignedEvent.java
new file mode 100644
index 00000000..b0fc2440
--- /dev/null
+++ b/src/main/java/com/sparrowwallet/sparrow/event/PSBTSignedEvent.java
@@ -0,0 +1,16 @@
+package com.sparrowwallet.sparrow.event;
+
+import com.sparrowwallet.drongo.psbt.PSBT;
+
+public class PSBTSignedEvent extends PSBTEvent {
+    private final PSBT signedPsbt;
+
+    public PSBTSignedEvent(PSBT psbt, PSBT signedPsbt) {
+        super(psbt);
+        this.signedPsbt = signedPsbt;
+    }
+
+    public PSBT getSignedPsbt() {
+        return signedPsbt;
+    }
+}
diff --git a/src/main/java/com/sparrowwallet/sparrow/io/Hwi.java b/src/main/java/com/sparrowwallet/sparrow/io/Hwi.java
index 60f13cd3..741544f6 100644
--- a/src/main/java/com/sparrowwallet/sparrow/io/Hwi.java
+++ b/src/main/java/com/sparrowwallet/sparrow/io/Hwi.java
@@ -3,6 +3,8 @@ package com.sparrowwallet.sparrow.io;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.CharStreams;
 import com.google.gson.*;
+import com.sparrowwallet.drongo.psbt.PSBT;
+import com.sparrowwallet.drongo.psbt.PSBTParseException;
 import com.sparrowwallet.drongo.wallet.WalletModel;
 import javafx.concurrent.ScheduledService;
 import javafx.concurrent.Service;
@@ -24,13 +26,15 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
 public class Hwi {
+    private static boolean isPromptActive = false;
+
     public List<Device> enumerate(String passphrase) throws ImportException {
         try {
             List<String> command;
             if(passphrase != null) {
-                command = List.of(getHwiExecutable().getAbsolutePath(), "--password", passphrase, "enumerate");
+                command = List.of(getHwiExecutable(Command.ENUMERATE).getAbsolutePath(), "--password", passphrase, Command.ENUMERATE.toString());
             } else {
-                command = List.of(getHwiExecutable().getAbsolutePath(), "enumerate");
+                command = List.of(getHwiExecutable(Command.ENUMERATE).getAbsolutePath(), Command.ENUMERATE.toString());
             }
 
             String output = execute(command);
@@ -43,7 +47,8 @@ public class Hwi {
 
     public boolean promptPin(Device device) throws ImportException {
         try {
-            String output = execute(getDeviceCommand(device, "promptpin"));
+            String output = execute(getDeviceCommand(device, Command.PROMPT_PIN));
+            isPromptActive = true;
             return wasSuccessful(output);
         } catch(IOException e) {
             throw new ImportException(e);
@@ -52,7 +57,7 @@ public class Hwi {
 
     public boolean sendPin(Device device, String pin) throws ImportException {
         try {
-            String output = execute(getDeviceCommand(device, "sendpin", pin));
+            String output = execute(getDeviceCommand(device, Command.SEND_PIN, pin));
             return wasSuccessful(output);
         } catch(IOException e) {
             throw new ImportException(e);
@@ -63,9 +68,9 @@ public class Hwi {
         try {
             String output;
             if(passphrase != null && device.getModel().equals(WalletModel.TREZOR_1)) {
-                output = execute(getDeviceCommand(device, passphrase, "getxpub", derivationPath));
+                output = execute(getDeviceCommand(device, passphrase, Command.GET_XPUB, derivationPath));
             } else {
-                output = execute(getDeviceCommand(device, "getxpub", derivationPath));
+                output = execute(getDeviceCommand(device, Command.GET_XPUB, derivationPath));
             }
 
             JsonObject result = JsonParser.parseString(output).getAsJsonObject();
@@ -79,16 +84,49 @@ public class Hwi {
         }
     }
 
+    public PSBT signPSBT(Device device, String passphrase, PSBT psbt) throws SignTransactionException {
+        try {
+            String psbtBase64 = psbt.toBase64String();
+
+            String output;
+            if(passphrase != null && device.getModel().equals(WalletModel.TREZOR_1)) {
+                output = execute(getDeviceCommand(device, passphrase, Command.SIGN_TX, psbtBase64));
+            } else {
+                output = execute(getDeviceCommand(device, Command.SIGN_TX, psbtBase64));
+            }
+
+            JsonObject result = JsonParser.parseString(output).getAsJsonObject();
+            if(result.get("psbt") != null) {
+                String strPsbt = result.get("psbt").getAsString();
+                return PSBT.fromString(strPsbt);
+            } else {
+                JsonElement error = result.get("error");
+                if(error != null && error.getAsString().equals("sign_tx canceled")) {
+                    throw new SignTransactionException("Signing cancelled");
+                } else if(error != null) {
+                    throw new SignTransactionException("Error: " + error.getAsString());
+                } else {
+                    throw new SignTransactionException("Could not retrieve PSBT");
+                }
+            }
+        } catch(IOException e) {
+            throw new SignTransactionException("Could not sign PSBT", e);
+        } catch(PSBTParseException e) {
+            throw new SignTransactionException("Could not parsed signed PSBT", e);
+        }
+    }
+
     private String execute(List<String> command) throws IOException {
+        isPromptActive = false;
         ProcessBuilder processBuilder = new ProcessBuilder(command);
         Process process = processBuilder.start();
         return CharStreams.toString(new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8));
     }
 
-    private synchronized File getHwiExecutable() {
+    private synchronized File getHwiExecutable(Command command) {
         File hwiExecutable = Config.get().getHwi();
         if(hwiExecutable != null && hwiExecutable.exists()) {
-            if(!testHwi(hwiExecutable)) {
+            if(command.isTestFirst() && !testHwi(hwiExecutable)) {
                 if(Platform.getCurrent().getPlatformId().toLowerCase().equals("mac")) {
                     deleteDirectory(hwiExecutable.getParentFile());
                 } else {
@@ -203,16 +241,16 @@ public class Hwi {
         return result.get("success").getAsBoolean();
     }
 
-    private List<String> getDeviceCommand(Device device, String command) throws IOException {
-        return List.of(getHwiExecutable().getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command);
+    private List<String> getDeviceCommand(Device device, Command command) throws IOException {
+        return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command.toString());
     }
 
-    private List<String> getDeviceCommand(Device device, String command, String data) throws IOException {
-        return List.of(getHwiExecutable().getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command, data);
+    private List<String> getDeviceCommand(Device device, Command command, String data) throws IOException {
+        return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command.toString(), data);
     }
 
-    private List<String> getDeviceCommand(Device device, String passphrase, String command, String data) throws IOException {
-        return List.of(getHwiExecutable().getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), "--password", passphrase, command, data);
+    private List<String> getDeviceCommand(Device device, String passphrase, Command command, String data) throws IOException {
+        return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), "--password", passphrase, command.toString(), data);
     }
 
     public static class EnumerateService extends Service<List<Device>> {
@@ -244,15 +282,19 @@ public class Hwi {
         protected Task<List<Device>> createTask() {
             return new Task<>() {
                 protected List<Device> call() throws ImportException {
-                    Hwi hwi = new Hwi();
-                    return hwi.enumerate(passphrase);
+                    if(!isPromptActive) {
+                        Hwi hwi = new Hwi();
+                        return hwi.enumerate(passphrase);
+                    }
+
+                    return null;
                 }
             };
         }
     }
 
     public static class PromptPinService extends Service<Boolean> {
-        private Device device;
+        private final Device device;
 
         public PromptPinService(Device device) {
             this.device = device;
@@ -270,8 +312,8 @@ public class Hwi {
     }
 
     public static class SendPinService extends Service<Boolean> {
-        private Device device;
-        private String pin;
+        private final Device device;
+        private final String pin;
 
         public SendPinService(Device device, String pin) {
             this.device = device;
@@ -290,9 +332,9 @@ public class Hwi {
     }
 
     public static class GetXpubService extends Service<String> {
-        private Device device;
-        private String passphrase;
-        private String derivationPath;
+        private final Device device;
+        private final String passphrase;
+        private final String derivationPath;
 
         public GetXpubService(Device device, String passphrase, String derivationPath) {
             this.device = device;
@@ -311,6 +353,28 @@ public class Hwi {
         }
     }
 
+    public static class SignPSBTService extends Service<PSBT> {
+        private final Device device;
+        private final String passphrase;
+        private final PSBT psbt;
+
+        public SignPSBTService(Device device, String passphrase, PSBT psbt) {
+            this.device = device;
+            this.passphrase = passphrase;
+            this.psbt = psbt;
+        }
+
+        @Override
+        protected Task<PSBT> createTask() {
+            return new Task<>() {
+                protected PSBT call() throws SignTransactionException {
+                    Hwi hwi = new Hwi();
+                    return hwi.signPSBT(device, passphrase, psbt);
+                }
+            };
+        }
+    }
+
     public Gson getGson() {
         GsonBuilder gsonBuilder = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
         gsonBuilder.registerTypeAdapter(WalletModel.class, new DeviceModelSerializer());
@@ -331,4 +395,33 @@ public class Hwi {
             return WalletModel.valueOf(json.getAsJsonPrimitive().getAsString().toUpperCase());
         }
     }
+
+    private enum Command {
+        ENUMERATE("enumerate", true),
+        PROMPT_PIN("promptpin", true),
+        SEND_PIN("sendpin", false),
+        GET_XPUB("getxpub", true),
+        SIGN_TX("signtx", true);
+
+        private final String command;
+        private final boolean testFirst;
+
+        Command(String command, boolean testFirst) {
+            this.command = command;
+            this.testFirst = testFirst;
+        }
+
+        public String getCommand() {
+            return command;
+        }
+
+        public boolean isTestFirst() {
+            return testFirst;
+        }
+
+        @Override
+        public String toString() {
+            return command;
+        }
+    }
 }
diff --git a/src/main/java/com/sparrowwallet/sparrow/io/SignTransactionException.java b/src/main/java/com/sparrowwallet/sparrow/io/SignTransactionException.java
new file mode 100644
index 00000000..fa7d0b96
--- /dev/null
+++ b/src/main/java/com/sparrowwallet/sparrow/io/SignTransactionException.java
@@ -0,0 +1,19 @@
+package com.sparrowwallet.sparrow.io;
+
+public class SignTransactionException extends Exception {
+    public SignTransactionException() {
+        super();
+    }
+
+    public SignTransactionException(String message) {
+        super(message);
+    }
+
+    public SignTransactionException(Throwable cause) {
+        super(cause);
+    }
+
+    public SignTransactionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
index 583a00c1..a6a1d6d3 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
@@ -484,6 +484,7 @@ public class HeadersController extends TransactionFormController implements Init
 
     public void signPSBT(ActionEvent event) {
         signSoftwareKeystores();
+        signUsbKeystores();
     }
 
     private void signSoftwareKeystores() {
@@ -525,6 +526,20 @@ public class HeadersController extends TransactionFormController implements Init
         }
     }
 
+    private void signUsbKeystores() {
+        if(headersForm.getSigningWallet().getKeystores().stream().noneMatch(keystore -> keystore.getSource().equals(KeystoreSource.HW_USB))) {
+            return;
+        }
+
+        DeviceSignDialog dlg = new DeviceSignDialog(headersForm.getPsbt());
+        Optional<PSBT> optionalSignedPsbt = dlg.showAndWait();
+        if(optionalSignedPsbt.isPresent()) {
+            PSBT signedPsbt = optionalSignedPsbt.get();
+            headersForm.getPsbt().combine(signedPsbt);
+            EventManager.get().post(new PSBTCombinedEvent(headersForm.getPsbt()));
+        }
+    }
+
     private void updateSignedKeystores(Wallet signingWallet) {
         Map<PSBTInput, List<Keystore>> signedKeystoresMap = signingWallet.getSignedKeystores(headersForm.getPsbt());
         Optional<List<Keystore>> optSignedKeystores = signedKeystoresMap.values().stream().filter(list -> !list.isEmpty()).min(Comparator.comparingInt(List::size));
diff --git a/src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java b/src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java
index c0411b76..24fa83f8 100644
--- a/src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java
@@ -272,7 +272,7 @@ public class SendController extends WalletFormController implements Initializabl
             createButton.setDisable(walletTransaction == null || label.getText().isEmpty());
         });
 
-        address.setText("32YSPMaUePf511u5adEckiNq8QLec9ksXX");
+        address.setText("19Sp9dLinHy3dKo2Xxj53ouuZWAoVGGhg8");
 
         addValidation();
     }
@@ -309,9 +309,10 @@ public class SendController extends WalletFormController implements Initializabl
             if(recipientAmount != null && recipientAmount > recipientDustThreshold && (!userFeeSet.get() || (getFeeValueSats() != null && getFeeValueSats() > 0))) {
                 Wallet wallet = getWalletForm().getWallet();
                 Long userFee = userFeeSet.get() ? getFeeValueSats() : null;
+                Integer currentBlockHeight = AppController.getCurrentBlockHeight();
                 boolean groupByAddress = Config.get().isGroupByAddress();
                 boolean includeMempoolChange = Config.get().isIncludeMempoolChange();
-                WalletTransaction walletTransaction = wallet.createWalletTransaction(getUtxoSelectors(), recipientAddress, recipientAmount, getFeeRate(), getMinimumFeeRate(), userFee, sendAll, groupByAddress, includeMempoolChange);
+                WalletTransaction walletTransaction = wallet.createWalletTransaction(getUtxoSelectors(), recipientAddress, recipientAmount, getFeeRate(), getMinimumFeeRate(), userFee, currentBlockHeight, sendAll, groupByAddress, includeMempoolChange);
                 walletTransactionProperty.setValue(walletTransaction);
                 insufficientInputsProperty.set(false);