Public mode allows staff and visitors to use an app for check-in/check-out purposes at a childcare center without needing a personal login. To turn on public mode, users tap the settings button, toggle the public mode switch, and the app is then accessible for basic check-in functions. Public mode is turned off by tapping quickly in the top right corner multiple times, entering a staff PIN number, and confirming to exit public mode and return to the settings screen.