diff --git a/doc/tools/opensc-explorer.1.xml b/doc/tools/opensc-explorer.1.xml
index 6e981efb..40646fb7 100644
--- a/doc/tools/opensc-explorer.1.xml
+++ b/doc/tools/opensc-explorer.1.xml
@@ -475,6 +475,15 @@
 				</listitem>
 			</varlistentry>
 
+			<varlistentry>
+				<term>
+					<command>sm</command> <replaceable>[open]</replaceable>|<replaceable>[close]</replaceable>
+				</term>
+				<listitem>
+                                        <para>Calls the card's <replaceable>open</replaceable> or <replaceable>close</replaceable> Secure Messaging handler.</para>
+                                </listitem>
+			</varlistentry>
+
 		</variablelist>
 	</para>
 </refsect1>
diff --git a/src/tools/opensc-explorer.c b/src/tools/opensc-explorer.c
index 27c35210..5d4aa0b3 100644
--- a/src/tools/opensc-explorer.c
+++ b/src/tools/opensc-explorer.c
@@ -104,6 +104,7 @@ static int do_random(int argc, char **argv);
 static int do_get_data(int argc, char **argv);
 static int do_put_data(int argc, char **argv);
 static int do_apdu(int argc, char **argv);
+static int do_sm(int argc, char **argv);
 static int do_asn1(int argc, char **argv);
 static int do_help(int argc, char **argv);
 static int do_quit(int argc, char **argv);
@@ -186,6 +187,9 @@ static struct command	cmds[] = {
 	{ do_asn1,
 		"asn1",	"[<file id>]",
 		"decode an ASN.1 file"			},
+	{ do_sm,
+		"sm",	"open|close",
+		"call SM 'open' or 'close' handlers, if available"},
 	{ do_debug,
 		"debug",	"[<value>]",
 		"get/set the debug level"		},
@@ -1639,6 +1643,40 @@ err:
 	return -err;
 }
 
+static int do_sm(int argc, char **argv)
+{
+	int r = SC_ERROR_NOT_SUPPORTED, ret = -1;
+
+	if (argc != 1)
+		return usage(do_sm);
+
+#ifdef ENABLE_SM
+	if (!strcmp(argv[0],"open"))   {
+		if (!card->sm_ctx.ops.open)   {
+			printf("Not supported\n");
+			return -1;
+		}
+		r = card->sm_ctx.ops.open(card);
+	}
+	else if (!strcmp(argv[0],"close"))   {
+		if (!card->sm_ctx.ops.close)   {
+			printf("Not supported\n");
+			return -1;
+		}
+		r = card->sm_ctx.ops.close(card);
+	}
+#endif
+	if (r == SC_SUCCESS)   {
+		ret = 0;
+		printf("Success!\n");
+	}
+	else   {
+		printf("Failure: %s\n", sc_strerror(r));
+	}
+
+	return ret;
+}
+
 static int do_help(int argc, char **argv)
 {
 	struct command	*cmd;