diff --git a/common/util.cpp b/common/util.cpp
index 707dfe7..bb4f3ab 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -27,22 +27,38 @@ void Util::execCMD(QString cmd)
         emit write(cmd + "\r\n");
 }
 
-QString Util::execCMDWithOutput(QString cmd, unsigned long waitTime)
+QString Util::execCMDWithOutput(QString cmd, ReturnTrigger trigger)
 {
+    bool isResultFound = false;
+    QRegularExpression re;
+    re.setPatternOptions(QRegularExpression::DotMatchesEverythingOption);
+
     if(!isRunning)
         return "";
     QTime currTime = QTime::currentTime();
-    QTime targetTime = QTime::currentTime().addMSecs(waitTime);
+    QTime targetTime = QTime::currentTime().addMSecs(trigger.waitTime);
     isRequiringOutput = true;
     requiredOutput->clear();
     execCMD(cmd);
     while(QTime::currentTime() < targetTime)
     {
         QApplication::processEvents();
+        for(QString otpt : trigger.expectedOutputs)
+        {
+            re.setPattern(otpt);
+            isResultFound = re.match(*requiredOutput).hasMatch();
+            if(requiredOutput->contains(otpt))
+                break;
+        }
+        if(isResultFound)
+        {
+            delay(200);
+            break;
+        }
         if(timeStamp > currTime)
         {
             currTime = timeStamp;
-            targetTime = timeStamp.addMSecs(waitTime);
+            targetTime = timeStamp.addMSecs(trigger.waitTime);
         }
     }
     isRequiringOutput = false;
diff --git a/common/util.h b/common/util.h
index b2ca006..bbf935a 100644
--- a/common/util.h
+++ b/common/util.h
@@ -9,6 +9,7 @@
 #include <QTime>
 #include <QTimer>
 #include <QMetaType>
+#include <QRegularExpression>
 
 class Util : public QObject
 {
@@ -20,12 +21,33 @@ public:
         CLIENTTYPE_ICEMAN,
     };
 
+    struct ReturnTrigger
+    {
+        unsigned long waitTime;
+        QStringList expectedOutputs;
+        ReturnTrigger(unsigned long time)
+        {
+            waitTime = time;
+            expectedOutputs = QStringList();
+        }
+        ReturnTrigger(QStringList outputs)
+        {
+            waitTime = 10000;
+            expectedOutputs = outputs;
+        }
+        ReturnTrigger(unsigned long time, QStringList outputs)
+        {
+            waitTime = time;
+            expectedOutputs = outputs;
+        }
+    };
+
     Q_ENUM(Util::ClientType)
 
     explicit Util(QObject *parent = nullptr);
 
     void execCMD(QString cmd);
-    QString execCMDWithOutput(QString cmd, unsigned long waitTime = 2000);
+    QString execCMDWithOutput(QString cmd, ReturnTrigger trigger = 10000);
     void delay(unsigned int msec);
     ClientType getClientType();
 public slots:
diff --git a/module/mifare.cpp b/module/mifare.cpp
index a82816b..92d377e 100644
--- a/module/mifare.cpp
+++ b/module/mifare.cpp
@@ -119,7 +119,7 @@ void Mifare::chk()
                          "hf mf chk *"
                          + QString::number(cardType.type)
                          + " ?",
-                         1000 + cardType.type * 1000);
+                         Util::ReturnTrigger(1000 + cardType.sector_size * 200, {"No valid", "\\|---\\|----------------\\|----------------\\|"}));
     qDebug() << result;
 
     int offset = 0;
@@ -183,7 +183,8 @@ void Mifare::nested()
         result = util->execCMDWithOutput(
                      "hf mf nested "
                      + QString::number(cardType.type)
-                     + " *", 10000);
+                     + " *",
+                     Util::ReturnTrigger(10000, {"Can't found", "\\|000\\|"}));
     }
     else if(util->getClientType() == Util::CLIENTTYPE_ICEMAN)
     {
@@ -624,7 +625,7 @@ void Mifare::writeSelected(TargetType targetType)
                     continue;
                 else if(choice == QMessageBox::YesToAll)
                     yes2All = true;
-                else if(QMessageBox::NoToAll)
+                else if(choice == QMessageBox::NoToAll)
                 {
                     no2All = true;
                     continue;
diff --git a/ui/mainwindow.cpp b/ui/mainwindow.cpp
index 8fbbd8a..aac66f5 100644
--- a/ui/mainwindow.cpp
+++ b/ui/mainwindow.cpp
@@ -125,6 +125,10 @@ void MainWindow::refreshCMD(const QString& cmd)
         ui->Raw_CMDHistoryWidget->addItem(cmd);
 }
 
+void MainWindow::on_stopButton_clicked()
+{
+
+}
 // *********************************************************
 
 // ******************** raw command ********************
@@ -798,12 +802,15 @@ void MainWindow::uiInit()
     connectStatusBar = new QLabel(this);
     programStatusBar = new QLabel(this);
     PM3VersionBar = new QLabel(this);
+    stopButton = new QPushButton(this);
     setStatusBar(connectStatusBar, tr("Not Connected"));
     setStatusBar(programStatusBar, tr("Idle"));
     setStatusBar(PM3VersionBar, "");
+    stopButton->setText(tr("Stop"));
     ui->statusbar->addPermanentWidget(PM3VersionBar, 1);
     ui->statusbar->addPermanentWidget(connectStatusBar, 1);
     ui->statusbar->addPermanentWidget(programStatusBar, 1);
+    ui->statusbar->addPermanentWidget(stopButton);
 
     ui->MF_dataWidget->setColumnCount(3);
     ui->MF_dataWidget->setHorizontalHeaderItem(0, new QTableWidgetItem(tr("Sec")));
@@ -812,7 +819,7 @@ void MainWindow::uiInit()
     ui->MF_dataWidget->verticalHeader()->setVisible(false);
     ui->MF_dataWidget->setColumnWidth(0, 55);
     ui->MF_dataWidget->setColumnWidth(1, 55);
-    ui->MF_dataWidget->setColumnWidth(2, 430);
+    ui->MF_dataWidget->setColumnWidth(2, 450);
 
     ui->MF_keyWidget->setColumnCount(3);
     ui->MF_keyWidget->setHorizontalHeaderItem(0, new QTableWidgetItem(tr("Sec")));
@@ -820,8 +827,8 @@ void MainWindow::uiInit()
     ui->MF_keyWidget->setHorizontalHeaderItem(2, new QTableWidgetItem(tr("KeyB")));
     ui->MF_keyWidget->verticalHeader()->setVisible(false);
     ui->MF_keyWidget->setColumnWidth(0, 35);
-    ui->MF_keyWidget->setColumnWidth(1, 115);
-    ui->MF_keyWidget->setColumnWidth(2, 115);
+    ui->MF_keyWidget->setColumnWidth(1, 125);
+    ui->MF_keyWidget->setColumnWidth(2, 125);
 
     MF_widgetReset();
     typeBtnGroup = new QButtonGroup(this);
@@ -887,6 +894,8 @@ void MainWindow::signalInit()
     connect(ui->MF_UIDGroupBox, &QGroupBox::clicked, this, &MainWindow::on_GroupBox_clicked);
     connect(ui->MF_simGroupBox, &QGroupBox::clicked, this, &MainWindow::on_GroupBox_clicked);
     connect(ui->MF_sniffGroupBox, &QGroupBox::clicked, this, &MainWindow::on_GroupBox_clicked);
+
+    connect(stopButton, &QPushButton::clicked, this, &MainWindow::on_stopButton_clicked);
 }
 
 void MainWindow::setStatusBar(QLabel * target, const QString & text)
diff --git a/ui/mainwindow.h b/ui/mainwindow.h
index 873f6d4..55c8c6f 100644
--- a/ui/mainwindow.h
+++ b/ui/mainwindow.h
@@ -19,6 +19,7 @@
 #include <QGroupBox>
 #include <QSizePolicy>
 #include <QSettings>
+#include <QPushButton>
 
 #include "common/pm3process.h"
 #include "module/mifare.h"
@@ -148,12 +149,14 @@ private slots:
 
     void on_MF_selectTrailerBox_stateChanged(int arg1);
 
+    void on_stopButton_clicked();
 private:
     Ui::MainWindow* ui;
     QButtonGroup* typeBtnGroup;
     QLabel* connectStatusBar;
     QLabel* programStatusBar;
     QLabel* PM3VersionBar;
+    QPushButton* stopButton;
     QAction* myInfo;
     QAction* checkUpdate;
     QSettings* settings;