[leoc]

I would have said "hands-free city navigation", but everyone - Google, the "explorers", people who meet them in the street - seems to be preoccupied with the photo/video applications. I don't know if that's because the device is actually defective for that purpose in some unobvious way, or because people just can't look beyond the video-recording use (or if not that, the notification-firehose one).