The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per hexus.net: "Google Glass is now available for any US resident to buy Tags: Google (NASDAQ:GO…"
Wikipedia's Google Glass article gives the Explorer Edition's "Prism projector, 640x360 pixels", 5 MP/720p camera, 16 GB flash (12 GB usable), 570 mAh battery, 36 g weight and bone-conduction audio.
Fortune's own report states "Anyone in the U.S. with $1,500 to spare can now buy... Glass," corroborating the open-beta launch, published 14 May 2014, within the pin's 13-15 May 2014 window.
TheNextWeb reports "Google today opened its Google Glass program to all in the US... can now buy the Glass Explorer edition... for $1,500 without needing an invite," matching the pin's stored 13 May 2014 date.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
