People with relevant knowledge: how far away are great AR glasses, and what are the bottlenecks or constraints?<p>Let's say that great equals "people will want to wear them for multiple hours every day"
2013. They didn't take off due to privacy and legal concerns of potentially recording <i>everything</i> and <i>everyone</i> without their consent. The developers only other option would be to lock down the video stream so only their (if uncompromised) code could process the images - in highly regulated ways - which limited the function to app built exclusively by the manufacturer.