Google Glass has a series of Labs experiments that can be enabled on engineering or userdebug builds. Using APKTool, I've removed that restriction and now they can be enabled with root access.
Google Play services is used to update Google apps and apps from Google Play. This component gives you access to Google Settings and helps apps speed up offline searches, provide more immersive maps, and improve performance.
Apps may not work if you uninstall Google Play services. You probably need this component.
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