diff --git a/example/osfp_example.c b/example/osfp_example.c
index 2a53ac6..a9b3017 100644
--- a/example/osfp_example.c
+++ b/example/osfp_example.c
@@ -431,7 +431,7 @@ const char *PrintInet(int af, const void *src, char *dst, socklen_t size)
 void example_detect(struct osfp_db *osfp_db, Packet *p)
 {
     int ret;
-    char str_buf[1024];
+    char str_buf[1024] = "";
     //unsigned char *iph = (unsigned char *)(p->iph != NULL ? (void *)p->iph : (void *)p->ip6h);
     struct iphdr *iph;
     struct ip6_hdr *ip6h;
@@ -448,11 +448,15 @@ void example_detect(struct osfp_db *osfp_db, Packet *p)
     osfp_profile_cycle(c2);
 
 
+    struct osfp_fingerprint fp = {0};
+
     osfp_profile_get_cycle(c1);
     if (iph) {
         result = osfp_ipv4_identify(osfp_db, iph, tcph, tcph_len);
+        osfp_fingerprinting(iph, tcph, tcph_len, &fp, 4);
     } else if (ip6h) {
         result = osfp_ipv6_identify(osfp_db, ip6h, tcph, tcph_len);
+        osfp_fingerprinting(iph, tcph, tcph_len, &fp, 6);
     } else {
         goto exit;
     }
@@ -471,6 +475,9 @@ void example_detect(struct osfp_db *osfp_db, Packet *p)
 
     char *json = osfp_result_score_detail_export(result);
 
+    osfp_fingerprint_to_json_buf(&fp, str_buf, 2048, 0);
+    printf("%s\n", str_buf);
+
     if (1) {
         printf("Example ipv4 header detect: --------------------------\n");
         printf("Connection info: %s:%d -> %s:%d\n", p->srcip, p->sp, p->dstip, p->dp);