Translations:System Settings/Login Screen/2/en

From KDE Wiki Sandbox

If you don't want to type your username and password during login, you can check in the tab Advanced the Enable Auto-login box here, then select the user and default desktop environment you want to auto-login with, and hit Apply. Remember, though, that anyone who can physically access your computer or laptop will also have instant access to all your data. You need to make a risk assessment before using this facility.