1. Windows 7 improves User Account Control (UAC) by reducing complexity and only notifying the default user of changes made by run software, not Windows settings.
2. HomeGroup makes sharing files and printers on a home network easy by automatically sharing music, pictures, videos, and documents between Windows 7 PCs on the network after joining the HomeGroup.
3. Parental controls allow restricting specific users' access to programs and time on the computer through settings in the Control Panel.