# Debugging UI The login and lock screen can run with a developer overlay that make common operations such as setting up a device with 10+ users trivial. Pass the flag `--show-login-dev-overlay` when running chrome and the UI will automatically appear. ```sh ./out/Release/chrome --show-login-dev-overlay ``` The overlay will use fake data where necessary to show the relevant UI; buttons are mostly functional but may break since fake data may be sent to chrome.