diff --git a/include/types.h b/include/types.h
index 460a73e4..ba2481f7 100644
--- a/include/types.h
+++ b/include/types.h
@@ -104,10 +104,14 @@ struct ofono_network_time {
 	int utcoff;	/* Offset from UTC in seconds */
 };
 
+#define OFONO_SHA1_UUID_LEN 20
+
 struct ofono_uuid {
-	unsigned char uuid[20];
+	unsigned char uuid[OFONO_SHA1_UUID_LEN];
 };
 
+const char *ofono_uuid_to_str(const struct ofono_uuid *uuid);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/common.c b/src/common.c
index 4eaff5e9..8243f214 100644
--- a/src/common.c
+++ b/src/common.c
@@ -31,6 +31,7 @@
 
 #include <ofono/types.h>
 #include "common.h"
+#include "util.h"
 
 struct error_entry {
 	int error;
@@ -686,3 +687,10 @@ gboolean is_valid_apn(const char *apn)
 
 	return TRUE;
 }
+
+const char *ofono_uuid_to_str(const struct ofono_uuid *uuid)
+{
+	static char buf[OFONO_SHA1_UUID_LEN * 2 + 1];
+
+	return encode_hex_own_buf(uuid->uuid, OFONO_SHA1_UUID_LEN, 0, buf);
+}