diff --git a/screen_locker/run.sh b/screen_locker/run.sh
new file mode 100755
index 0000000..f40d569
--- /dev/null
+++ b/screen_locker/run.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -e
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+VENV="$REPO_ROOT/.venv"
+[[ ! -d "$VENV" ]] && python3 -m venv "$VENV"
+# tkinter is from Python stdlib; install python-tk system package if missing:
+#   Arch:   sudo pacman -S python-tk
+#   Debian: sudo apt-get install python3-tk
+"$VENV/bin/python" "$SCRIPT_DIR/screen_lock.py" "$@"