Google Glass is a wearable, voice-controlled Android device that resembles a pair of eyeglasses and displays information directly in the user's field of vision.
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Google Glass offers an augmented reality experience by using visual, audio and location-based inputs to provide relevant information. For example, upon entering an airport, a user could automatically receive flight status information. Users can also control the device manually through voice commands and a touchpad located on its frame.
The Google Glass operating system is based on a version of Android, and it can run apps called Glassware that are optimized for the device. The glasses have built-in Wi-Fi and Bluetooth connectivity and a camera for taking photographs and videos.
Google X, Google's futuristic technology lab, formally announced its work on Project Glass in 2012. The company made the device available to testers and developers in early 2013.