[rchaud]

There have been smart glasses made by Snapchat and Facebook, those didn't take off either.

Glasses are not visually subtle in the way smartwatches and phones are. It's one thing for everybody to be carrying the same iPhone, but people won't wear identical one-design-fits-all glasses when out and about.

[esskay]

I'm not sure I'd call those smart. They're basic little camera specs. We both know thats not what we mean when we discuss usable AR.

[rchaud]

For glasses, people will care more about how it looks than what it does. The fashion barrier is something that designers have not put enough thought into and unsurprisingly, they haven't taken off.