The annoying thing is that even if you yourself don't use these glasses, as long as people around you do, you are still affected by it. We really need laws to limit always-on recording devices in places where we have an expectation of privacy.
We need laws and social norms where filming a stranger and uploading it online is considered a serious unacceptable offense regardless of the device. I find it absurd that today is completely acceptable to just film an unaware stranger and put the video online, especially since that the majority of the videos are about making fun of them or humiliate them.
I heard that in Japan phones have an audible shutter sound. Not mandated by law. Though I think that having this in the law is very reasonable. Maybe EU can step up. Taking photos is more fun with the sound too.
There are very few places you can expect privacy in public. Restrooms, changing rooms, etc. But in most places in public you should have zero expectation of privacy (in the US).
In private settings, as with public, you are typically free to leave a setting where people are recording.
The law has no specifications for what type of device can do the recording, pr for how long a recording can be.
"But it's the public space you can't expect any kind of privacy there, if you don't want private companies to do biometrics on your face from a rando glasses just don't go out :)" The open air panopticon, where every inmate is also the warden, gov salivates at the idea. (yes, yes, you're very smart, you, the reader: smartphones are already tracking and recording us everywhere. One more device, one more case isn't an issue anymore. So let's just keep adding them instead of trying to address them.)
Actually useful AR needs cameras, of course, so the technology has legitimate use cases, but you'd have to be a real asshole to wear them to a bar, or a restaurant, etc. Maybe we mandate that the glasses have to have a base station dongle, and if they're more than 10 feet from the dongle, recording doesn't work without incredibly obvious annoying lights indicating that recording is on?
A cultural convention that lets people make honest mistakes, but turn it off when someone says "hey, you're recording" seems like a good solution. Just need to make it easily visible and obvious to others - you can run around in public with a big news camera on your shoulder or a tripod and you usually won't get hassled. It's just the idea of being covertly recorded, even while in public, that gets creepy.