Taking a reference face image for vectorization - certainly. If I'll have a wearable device, I wouldn't mind asking, even explaining the setup, risk assessment, and so on. Right now I apologize that I would most likely not remember person's face anyway. Although I shouldn't have to because you don't have to do it for functionally 100% equivalent thing with your eyes.
Continuously scanning faces for matches against a private library, on device, zero transmissions and everything decent and respectful - how do you imagine consenting? A balloon above my head with a banner that goes like "sorry folks the meat in my head is wacky, so there's a machine that eyeballs y'all - no recordings, just some real-time processing that doesn't transmit or long-term store any results"? Even something like that probably won't cut it for a consent.
Yeah, definitely difficult to envision how something like that would work if you have live crowd processing. FWIW someone close to me has a similar problem, I’ve seen how annoying it can be. I can see how a wearable would help but anything with cameras is causing friction with people expectation of privacy. I don’t know the correct way to balance that in your case, other than explicitly asking for consent before recording
To reiterate, my suggestion is to ignore the cameras and just focus on regulation and prohibition of actually harmful activities - that is, publication without depicted persons explicit consent. If some tiktok shitheads abuse the public trust and upload derogatory videos - fine them into selling those glasses and then some, duh. Make that a very public case to send a "we don't tolerate this" message to others. This focuses and addresses actual, real issues, and leaves legitimate use cases unhindered.
That said, I understand that people subconsciously flinch at even a sight of a camera. I've had a guest wearing Meta glasses just the other day, and I felt a little irk - despite having a pro-camera position (although to be precise my concern there was with Meta, not the glasses themselves). Worse, it turned out that guest was a victim of domestic abuse, so they have an arguably good reason to have a camera ready at a glance.
Taking a reference face image for vectorization - certainly. If I'll have a wearable device, I wouldn't mind asking, even explaining the setup, risk assessment, and so on. Right now I apologize that I would most likely not remember person's face anyway. Although I shouldn't have to because you don't have to do it for functionally 100% equivalent thing with your eyes.
Continuously scanning faces for matches against a private library, on device, zero transmissions and everything decent and respectful - how do you imagine consenting? A balloon above my head with a banner that goes like "sorry folks the meat in my head is wacky, so there's a machine that eyeballs y'all - no recordings, just some real-time processing that doesn't transmit or long-term store any results"? Even something like that probably won't cut it for a consent.