Glossary

Term	Definition
AI Glasses	All-day wear, hands-free devices that provide access to information. Some have a display and some are audio-only. Equipped with speakers, a camera, and a microphone.
Display AI Glasses	AI Glasses with the addition of a small, private display for glanceable visuals that harmonize with audio output.
Jetpack Compose Glimmer	A Compose UI toolkit for building augmented Android XR experiences, optimized for Display AI Glasses. It provides components, theming, and behaviors for transparent displays.
Projected Activity	An Android `Activity` that runs on a host device (phone) but its UI and interactions are projected to a connected AI glasses device.
Projected Device	An XR device connected to an Android-powered device (host). Host projects the application content to the Projected device and let users interact with it.
GlimmerTheme	The root provider for styling tokens, including GlimmerColors, GlimmerTypography, and GlimmerShapes.
Additive Display	A display technology where black (#000000) is rendered as 100% transparent. UI is built by adding light to the environment. Display AI Glasses have an additive display.
Augmented Experiences	Android XR experiences that enhance a user's focus and presence in the real world. They are lightweight and additive, helping users while they are on-the-go
Visual Angle	A unit of measurement for perceived size in XR. The minimum readable text size is 0.6 degrees (approx. 18sp at 1 m).

Prerequisites

Mobile project should target minSDK 37 or higher. If the target SDK is lower than 37, increase the SDK to 37. AI Glasses should target API 36 or higher.