I think the article's author may end up on the wrong side of the Glass-bashing. Google hasn't a great track record with hardware, so maybe the hurdle for mass a

I think the article's author may end up on the wrong side of the Glass-bashing. Google hasn't a great track record with hardware, so maybe the hurdle for mass adoption is high. But it would not be all that difficult for Google to make a few modifications, or for enough adoption to increase awareness enough, so that the average person talking to a Glass wearer would know when it's on, when it's snapping a picture or video, when the user is absently looking at something else. The criticism strikes of the same sentiments that people carrying smart phones would be social pariah, or as was mentioned in another article a few weeks ago, that people wearing headphones with their Walkmans would be socially off-putting and aloof as well. Both of these are more-or-less assimilated into normal life. I expect that wearables, quite possibly Glass if it lasts long enough, will end up just as much a non-issue in a few years.