diff --git a/src/qbrowserlib/filestorage.hxx b/src/qbrowserlib/filestorage.hxx
index 023b822..7e7f13d 100644
--- a/src/qbrowserlib/filestorage.hxx
+++ b/src/qbrowserlib/filestorage.hxx
@@ -5,6 +5,7 @@
 //       1         2         3         4         5         6         7         8
 // 45678901234567890123456789012345678901234567890123456789012345678901234567890
 
+#include <qbrowserlib/log.hxx>
 #include <QtCore/QFile>
 #include <QtCore/QDir>
 #include <QtCore/QFileInfo>
@@ -22,7 +23,12 @@ class Storage: public QObject {
     //! Emitted if file content has changed.
     void changed();
   public:
-    Storage() {}
+    Storage() {
+      TRC;
+    }
+    ~Storage() {
+      TRC;
+    }
     /*! @return true if readable or writable */
     bool valid() {
       return readable() || writeable();
@@ -41,6 +47,11 @@ class Storage: public QObject {
     virtual QStringList read() = 0;
     //! Writes storage content from string list.
     virtual bool write(const QStringList& out) = 0;
+  public Q_SLOTS:
+    void emitChanged() {
+      TRC;
+      changed();
+    }
 };
 
 //! Implement @ref Storage for files.
@@ -49,11 +60,12 @@ class FileStorage: public Storage {
   public:
     /*! @param file full path to storage file */
     FileStorage(QString file): _file(file) {
+      TRC; LOG<<"file: "<<file;
       _watcher.addPath(QFileInfo(_file).absolutePath());
       assert(connect(&_watcher, SIGNAL(directoryChanged(const QString&)),
                      SLOT(setupWatcher())));
       assert(connect(&_watcher, SIGNAL(fileChanged(const QString&)),
-                     SIGNAL(changed())));
+                     SLOT(emitChanged())));
     }
     QString name() {
       return _file.fileName();
@@ -67,6 +79,7 @@ class FileStorage: public Storage {
          QFileInfo(_file).absoluteDir().exists());
     }
     QStringList read() {
+      TRC;
       QStringList res;
       if (readable()) {
         if (_file.open(QIODevice::ReadOnly))
@@ -76,6 +89,7 @@ class FileStorage: public Storage {
       return res;
     }
     bool write(const QStringList& out) {
+      TRC;
       bool res(false);
       if (writeable()) {
         if (_file.open(QIODevice::WriteOnly))
@@ -86,13 +100,14 @@ class FileStorage: public Storage {
     }
   private Q_SLOTS:
     void setupWatcher() {
+      TRC;
       bool watching(_watcher.files().size());
       if (watching) // remove watchlist if already existent
         _watcher.removePaths(_watcher.files());
       if (readable()) { // add file to watchlist
         _watcher.addPath(_file.fileName());
         if (!watching) // send change event if file is initially created
-          changed();
+          emitChanged();
       }
     }
   private:
diff --git a/src/smartcardauth.hxx b/src/smartcardauth.hxx
index c529847..2a126be 100644
--- a/src/smartcardauth.hxx
+++ b/src/smartcardauth.hxx
@@ -249,6 +249,82 @@ class SmartCardAuth: public QObject {
     }
 
   private:
+
+    int minPinLen(const std::string& name) {
+      TRC; LOG<<name.c_str();
+      try {
+        pcsc::Connection pcsc;
+        pcsc::Connection::Reader& reader(pcsc.reader(name));
+#ifndef Q_OS_MAC
+        pcsc::Connection::Reader::Transaction lock(reader);
+#endif
+        // first try to read version info
+        if (reader.transmit(0x00, 0xA4, 0x08, 0x0C, "\x3f\x00\x56\x49", 4)
+            != std::string("\x90\x00", 2) || !reader) {
+          LOG<<"Select File failed";
+          return -2;
+        }
+        std::string res(reader.transmit(0x00, 0xB0, 0x00, 0x00));
+        if (res.substr(res.size()-2)!=std::string("\x90\x00", 2)) {
+          LOG<<"read error";
+          return -2;
+        }
+        LOG<<"version text is: "<<res.substr(4, res[3]).c_str();
+        // if (res.substr(4, res[3]) != "RAPost 2009" &&
+        //     res.substr(4, res[3]) != "RAPost 2010") {
+        //   LOG<<"unsupported card";
+        //   return -2;
+        // }
+        if (retCode(reader.transmit(0x00, 0xA4, 0x00, 0x0C)) == 0x9000) {
+          int value(retCode(reader.transmit(0x00, 0x20, 0x00, 0x81)));
+          if ((value&0x63C0)==0x63C0) return value&0x0F;
+        } else {
+          LOG<<"**** ERROR in select MF while reading pin status";
+        }
+        return -1; // locked
+      } catch (const std::exception& x) {
+        LOG<<"**** ERROR while reading pin status: "<<x.what();
+        return -2;
+      }
+    }
+    
+    int maxPinLen(const std::string& name) {
+      TRC; LOG<<name.c_str();
+      try {
+        pcsc::Connection pcsc;
+        pcsc::Connection::Reader& reader(pcsc.reader(name));
+#ifndef Q_OS_MAC
+        pcsc::Connection::Reader::Transaction lock(reader);
+#endif
+        // first try to read version info
+        if (reader.transmit(0x00, 0xA4, 0x08, 0x0C, "\x3f\x00\x56\x49", 4)
+            != std::string("\x90\x00", 2) || !reader) {
+          LOG<<"Select File failed";
+          return -2;
+        }
+        std::string res(reader.transmit(0x00, 0xB0, 0x00, 0x00));
+        if (res.substr(res.size()-2)!=std::string("\x90\x00", 2)) {
+          LOG<<"read error";
+          return -2;
+        }
+        LOG<<"version text is: "<<res.substr(4, res[3]).c_str();
+        // if (res.substr(4, res[3]) != "RAPost 2009" &&
+        //     res.substr(4, res[3]) != "RAPost 2010") {
+        //   LOG<<"unsupported card";
+        //   return -2;
+        // }
+        if (retCode(reader.transmit(0x00, 0xA4, 0x00, 0x0C)) == 0x9000) {
+          int value(retCode(reader.transmit(0x00, 0x20, 0x00, 0x81)));
+          if ((value&0x63C0)==0x63C0) return value&0x0F;
+        } else {
+          LOG<<"**** ERROR in select MF while reading pin status";
+        }
+        return -1; // locked
+      } catch (const std::exception& x) {
+        LOG<<"**** ERROR while reading pin status: "<<x.what();
+        return -2;
+      }
+    }
     
     int retries(const std::string& name) {
       TRC; LOG<<name.c_str();
diff --git a/test/qmake.pro.in b/test/qmake.pro.in
index 38fa994..a035236 100644
--- a/test/qmake.pro.in
+++ b/test/qmake.pro.in
@@ -3,6 +3,10 @@ QMAKE_LIBDIR += @top_builddir@/src/qbrowserlib
 QMAKE_LIBDIR += @top_builddir@/src/qbrowserlib/release
 QMAKE_LIBS += -lqbrowserlib
 
+macx {
+  CONFIG += x86
+}
+
 HEADERS = @srcdir@/filewatch.hxx
 
 SOURCES = @srcdir@/filewatch.cxx