diff --git a/system/unique_board_id/CMakeLists.txt b/system/unique_board_id/CMakeLists.txt
index 1a5b1f989..e17660868 100644
--- a/system/unique_board_id/CMakeLists.txt
+++ b/system/unique_board_id/CMakeLists.txt
@@ -12,3 +12,7 @@ pico_add_extra_outputs(unique_board_id)
 
 # add url via pico_set_program_url
 example_auto_set_url(unique_board_id)
+
+# enable both, usb output and uart output
+pico_enable_stdio_usb(unique_board_id 1)
+pico_enable_stdio_uart(unique_board_id 1)
\ No newline at end of file
diff --git a/system/unique_board_id/unique_board_id.c b/system/unique_board_id/unique_board_id.c
index 6fb06c714..e4549a59c 100644
--- a/system/unique_board_id/unique_board_id.c
+++ b/system/unique_board_id/unique_board_id.c
@@ -24,9 +24,13 @@ int main() {
     pico_unique_board_id_t board_id;
     pico_get_unique_board_id(&board_id);
 
-    printf("Unique identifier:");
-    for (int i = 0; i < PICO_UNIQUE_BOARD_ID_SIZE_BYTES; ++i) {
-        printf(" %02x", board_id.id[i]);
+    while(1) {
+        printf("Unique identifier:");
+        for (int i = 0; i < PICO_UNIQUE_BOARD_ID_SIZE_BYTES; ++i) {
+            printf(" %02x", board_id.id[i]);
+        }
+        printf("\n");
+
+        sleep_ms(2000);
     }
-    printf("\n");
 }