You lot are no fun, I'll be grabbing my set as soon as they go on sale.
A most useful technology for sure and I can see where it would be fun in some settings. A private party, parents taking their children on a family outing like the zoo, for the blind as I mentioned, etc. The glasses would be convenient and fun. But as goodintentions and others mentioned I think some people will misuse and/or abuse them.
I may joke about wearing the mask, but Heaven knows I'm too vain to do that. One of my standard lines when someone is attempting to take my picture is that they'll have to talk to my agent before the snap it, but that's me.
We all know people that don't like their picture taken.
As you may have noticed I'm a lot about human rights. I'm an old hippie. We're a lot about that. I'll have to stick to my guns here. Some people simply do not want their picture taken for whatever reason.
I'm no lawyer, but I can see this thing ending up in the U.S. Supreme Court and other High Courts in other countries. I think eventually these things will be banned in public, just like skateboards on sidewalks, alcohol in parks without permit, guns in public, etc. Simply too much at risk here. A load of lawsuits, though, before that happens.
Enjoy your glasses when you get them for now. Eventually I think you'll have a $1000 (if that's what they cost) conversation novelty piece sitting on your end table. Of course you'll be able to continue to use them in a private setting.