Google Glass was developed by Google X,the facility within Google devoted to technological advancements such as driverless cars. The military began researching Head-mounted displays in 1995. Google Glass is smaller and slimmer than previous head-mounted display designs. The Google Glass prototype resembled standard eyeglasses with the lens replaced by a head-up display. In the summer of 2011, Google engineered a prototype that weighed 8 pounds (3,600 g); it is now lighter than the average pair of sunglasses. In April 2013, the Explorer Edition was made available to Google I/O developers in the United States for $1,500 a consumer version was made available in 2014 for "significantly less" than the Explorer Edition. Google Glass is a wearable computer with an optical head-mounted display (OHMD). It was developed by Google with the mission of producing a mass-market ubiquitous computer. Google Glass displays information in a smartphone-like hands-free format.Wearers c
