Project Glass is a R&D program by Google to prototype and build augmented reality glasses or an augmented reality head-mounted display (HMD). Though such displays for augmented reality are not a new idea, the project has drawn media attention because Google is supporting it. The design is smaller and slimmer than the previous designs for head-mounted displays. Project Glass is part of the Google X Lab. It was first tested in April 2012. The main application would be the hands free displaying of information currently available to most smartphone users, and allowing for interaction with the Internet via natural language voice commands, in a manner similar to the iPhone application Siri. The Project Glass is powered by Google’s Android operating system.