This document discusses native development for Google Glass. It covers the Glass hardware, UI based on timeline cards and menus, the Mirror API, and the native SDK. It provides information on setting up the development environment in Eclipse, connecting Glass in debug mode, and creating new projects. It also discusses starting apps by voice, using voice input, and the Glass Development Kit (GDK) including the Card class. More advanced topics covered include gestures, sensors, publishing to the My Glass Console, and contextual voice commands.