diff --git a/scripts/track_anything.sh b/scripts/track_anything.sh
index f81b0bc..4a73a30 100644
--- a/scripts/track_anything.sh
+++ b/scripts/track_anything.sh
@@ -165,4 +165,13 @@ _on_sway() {
     done
 }
 
+on_system_dbus() { on _on_system_dbus; }
+_on_system_dbus() {
+  unbuf dbus-monitor --system | while read -r;do
+    case "$REPLY" in
+      signal*) echo;;
+    esac
+  done
+}
+
 on() { watch_cmd="$1"; }