diff --git a/.clang-format b/.clang-format
new file mode 100644
index 00000000..a7058423
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,3 @@
+BasedOnStyle: Google
+IndentWidth: 4
+
diff --git a/.gitignore b/.gitignore
index 747974b1..72f5de4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,6 +80,7 @@ src/tools/pkcs15-init
 src/tools/eidenv
 src/tools/opensc-explorer
 src/tools/cardos-info
+src/tools/gcns
 src/tools/sceac-example
 src/tools/opensc-notify
 src/tools/opensc-notify.plist
diff --git a/src/tools/Makefile.am b/src/tools/Makefile.am
index fe67ad01..87969352 100644
--- a/src/tools/Makefile.am
+++ b/src/tools/Makefile.am
@@ -29,7 +29,8 @@ noinst_HEADERS = util.h fread_to_eof.h \
 noinst_PROGRAMS = sceac-example
 bin_PROGRAMS = opensc-tool opensc-explorer opensc-notify \
 	pkcs15-tool pkcs15-crypt pkcs11-tool pkcs11-register \
-	cardos-tool eidenv openpgp-tool iasecc-tool egk-tool opensc-asn1 goid-tool
+	cardos-tool eidenv openpgp-tool iasecc-tool egk-tool opensc-asn1 goid-tool \
+	gcns
 if ENABLE_OPENSSL
 bin_PROGRAMS += cryptoflex-tool pkcs15-init netkey-tool piv-tool \
 	westcos-tool sc-hsm-tool dnie-tool gids-tool npa-tool
@@ -52,6 +53,8 @@ piv_tool_SOURCES = piv-tool.c util.c
 piv_tool_LDADD = $(OPTIONAL_OPENSSL_LIBS)
 opensc_explorer_SOURCES = opensc-explorer.c util.c
 opensc_explorer_LDADD = $(OPTIONAL_READLINE_LIBS)
+gcns_SOURCES = gcns.c util.c
+gcns_LDADD = $(OPTIONAL_READLINE_LIBS)
 pkcs15_tool_SOURCES = pkcs15-tool.c util.c ../pkcs11/pkcs11-display.c ../pkcs11/pkcs11-display.h
 pkcs15_tool_LDADD = $(OPTIONAL_OPENSSL_LIBS)
 pkcs11_tool_SOURCES = pkcs11-tool.c util.c
diff --git a/src/tools/gcns.c b/src/tools/gcns.c
new file mode 100644
index 00000000..59e594fa
--- /dev/null
+++ b/src/tools/gcns.c
@@ -0,0 +1,107 @@
+/*
+ * gcns.c: A reader of Italian healtcare smartcards with libopensc
+ *
+ * Copyright (C) 2022  Giovan Battista Rolandi <giomba@linux.it>
+ * based on previous work by
+ * Copyright (C) 2001  Juha Yrjölä <juha.yrjola@iki.fi>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+#ifdef ENABLE_READLINE
+#include <readline/history.h>
+#include <readline/readline.h>
+#endif
+#if !defined(_WIN32)
+#include <arpa/inet.h> /* for htons() */
+#endif
+
+#include <getopt.h>
+
+#include "common/compat_strlcpy.h"
+#include "libopensc/asn1.h"
+#include "libopensc/cardctl.h"
+#include "libopensc/cards.h"
+#include "libopensc/internal.h"
+#include "libopensc/iso7816.h"
+#include "libopensc/log.h"
+#include "libopensc/opensc.h"
+#include "util.h"
+
+static int opt_wait = 0;
+static const char *opt_reader = NULL;
+static sc_context_t *ctx = NULL;
+static sc_card_t *card = NULL;
+
+static void die(int ret) {
+    if (card) {
+        sc_disconnect_card(card);
+    }
+    if (ctx) sc_release_context(ctx);
+    exit(ret);
+}
+
+int main(int argc, char *argv[]) {
+    int r, err = 0;
+    sc_context_param_t ctx_param;
+    int lcycle = SC_CARDCTRL_LIFECYCLE_ADMIN;
+
+    printf("OpenSC version: %s\n", sc_get_version());
+
+    memset(&ctx_param, 0, sizeof(ctx_param));
+    ctx_param.ver = 0;
+
+    r = sc_context_create(&ctx, &ctx_param);
+    if (r) {
+        fprintf(stderr, "Failed to establish context: %s\n", sc_strerror(r));
+        return 1;
+    }
+
+    ctx->flags |= SC_CTX_FLAG_ENABLE_DEFAULT_DRIVER;
+
+    err = util_connect_card_ex(ctx, &card, opt_reader, opt_wait, 0, 0);
+    if (err) goto end;
+
+    r = sc_lock(card);
+    if (r == SC_SUCCESS)
+        r = sc_card_ctl(card, SC_CARDCTL_LIFECYCLE_SET, &lcycle);
+    sc_unlock(card);
+    if (r && r != SC_ERROR_NOT_SUPPORTED)
+        printf("unable to change lifecycle: %s\n", sc_strerror(r));
+
+    u8 buffer[2048];
+    sc_path_t path;
+    sc_format_path("3F0011001102", &path);
+    r = sc_select_file(card, &path, NULL);
+    if (r) {
+        fprintf(stderr, "no select file 3F0011001102\n");
+    }
+    r = sc_read_binary(card, 0, buffer, 0x180, 0);
+    if (r) {
+        fprintf(stderr, "no read binary: %d\n", r);
+    }
+    util_hex_dump_asc(stdout, buffer, r, 0);
+end:
+    die(err);
+
+    return 0; /* not reached */
+}