Project Glass is a research and development programme by Google to prototype and build an augmented reality head-mounted display. The first Project Glass demo resembles a pair of normal eyeglasses where the lens is replaced by a heads-up display and may be integrated into people's normal eyewear in the future.

The intended purpose of Project Glass product is 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 extremely similar to the iPhone application Siri. The software powering the glasses will be Google's Android operating system.

The project has drawn a lot of attention primarily due its backing by the major public corporation, as well as the prototype, which is smaller and slimmer than the previous designs for head-mounted displays.

Project Glass is part of the Google X Lab at the company, which has worked on other futuristic technologies, such as a self-driving car. The product is not expected to be available for purchase soon. But here is what the future will look like. Watch this videos to know how the device works.