It's just that as soon as it becomes normal that people wear such devices on their jacket or forehead or whatever, then pandora is out of the box already.
I really hope that each and every initiative like that meets its demise and people do not accept the #privacy invasion.
Probably wishful thinking, as so many folks love these gadgets. And there's many nice use cases to lure people into owning them.
We had Google "Glassholes" people didn't accept, but they were in-your-face.