diff --git a/pySim-shell.py b/pySim-shell.py
index 79b4d8b7..56655ba0 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -374,7 +374,7 @@ class PysimApp(Cmd2Compat):
             rc = self.equip(card, rs)
         except:
             self.poutput("")
-            self.poutput("Card initialization failed with an exception:")
+            self.poutput("Card initialization (%s) failed with an exception:" % str(self.sl))
             self.poutput("---------------------8<---------------------")
             traceback.print_exc()
             self.poutput("---------------------8<---------------------")
@@ -489,7 +489,7 @@ class PysimApp(Cmd2Compat):
                 return
             except:
                 self.poutput("")
-                self.poutput("Card handling failed with an exception:")
+                self.poutput("Card handling (%s) failed with an exception:" % str(self.sl))
                 self.poutput("---------------------8<---------------------")
                 traceback.print_exc()
                 self.poutput("---------------------8<---------------------")
@@ -1031,7 +1031,7 @@ if __name__ == '__main__':
         rs, card = init_card(sl)
         app = PysimApp(card, rs, sl, ch, opts.script)
     except:
-        print("Card initialization failed with an exception:")
+        print("Card initialization (%s) failed with an exception:" % str(sl))
         print("---------------------8<---------------------")
         traceback.print_exc()
         print("---------------------8<---------------------")
diff --git a/pySim-trace.py b/pySim-trace.py
index 325fb8ce..eb29ed1a 100755
--- a/pySim-trace.py
+++ b/pySim-trace.py
@@ -48,6 +48,9 @@ class DummySimLink(LinkBase):
         self._debug = debug
         self._atr = h2i('3B9F96801F878031E073FE211B674A4C753034054BA9')
 
+    def __str__(self):
+        return "dummy"
+
     def _send_apdu_raw(self, pdu):
         #print("DummySimLink-apdu: %s" % pdu)
         return [], '9000'
diff --git a/pySim/transport/__init__.py b/pySim/transport/__init__.py
index c8079f66..1dd8d18c 100644
--- a/pySim/transport/__init__.py
+++ b/pySim/transport/__init__.py
@@ -67,6 +67,10 @@ class LinkBase(abc.ABC):
         self.apdu_tracer = apdu_tracer
         self.proactive_handler = proactive_handler
 
+    @abc.abstractmethod
+    def __str__(self):
+        """Implementation specific method for printing an information to identify the device."""
+
     @abc.abstractmethod
     def _send_apdu_raw(self, pdu: Hexstr) -> ResTuple:
         """Implementation specific method for sending the PDU."""
diff --git a/pySim/transport/calypso.py b/pySim/transport/calypso.py
index 34fc6465..b827d88c 100644
--- a/pySim/transport/calypso.py
+++ b/pySim/transport/calypso.py
@@ -90,6 +90,9 @@ class CalypsoSimLink(LinkBase):
         self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
         self.sock.connect(sock_path)
 
+        # Remember socket path
+        self._sock_path = sock_path
+
     def __del__(self):
         self.sock.close()
 
@@ -156,3 +159,6 @@ class CalypsoSimLink(LinkBase):
         sw = rsp[-2:]
 
         return b2h(data), b2h(sw)
+
+    def __str__(self):
+        return "osmocon:%s" % (self._sock_path)
diff --git a/pySim/transport/modem_atcmd.py b/pySim/transport/modem_atcmd.py
index e99762dd..58d6f9d1 100644
--- a/pySim/transport/modem_atcmd.py
+++ b/pySim/transport/modem_atcmd.py
@@ -169,3 +169,6 @@ class ModemATCommandLink(LinkBase):
         sw = rsp_pdu[-4:].decode().lower()
         log.debug('Command response: %s, %s',  data, sw)
         return data, sw
+
+    def __str__(self):
+        return "modem:%s" % self._device
diff --git a/pySim/transport/pcsc.py b/pySim/transport/pcsc.py
index a01917f4..41c4c190 100644
--- a/pySim/transport/pcsc.py
+++ b/pySim/transport/pcsc.py
@@ -39,6 +39,7 @@ class PcscSimLink(LinkBase):
             raise ReaderError('No reader found for number %d' % reader_number)
         self._reader = r[reader_number]
         self._con = self._reader.createConnection()
+        self._reader_number = reader_number
 
     def __del__(self):
         try:
@@ -91,3 +92,6 @@ class PcscSimLink(LinkBase):
 
         # Return value
         return i2h(data), i2h(sw)
+
+    def __str__(self):
+        return "PCSC:%u[%s]" % (self._reader_number,  self._reader)
diff --git a/pySim/transport/serial.py b/pySim/transport/serial.py
index 998d1d89..f4b1621e 100644
--- a/pySim/transport/serial.py
+++ b/pySim/transport/serial.py
@@ -236,3 +236,6 @@ class SerialSimLink(LinkBase):
 
         # Return value
         return b2h(data), b2h(sw)
+
+    def __str__(self):
+        return "serial:%s" % (self._sl.name)