Laws Needed
This is part complaint and part thinking out aloud ...
I know, the legal angle has already been mentioned, but would it be too much to ask for our politicians to get the hell off the arses and actually protect us people from the intrusive ravages of selfish, mostly-foreign technology companies and their equally selfish users, especially given where the information goes and how it can be used for profit and/or manipulation?
There's already precedent in that use of audio bugs and recording devices requires the explicit permission of those being recorded (law enforcement and security agencies aside). Recording audio and/or video with smart glasses or other wearable devices should be similar in any private or semi-private setting, such as bathrooms, toilets, cafes/restaurants, private vehicles, private homes, or within a few metres of any place where a person or persons normally gather to work or recreate (probably excluding sport, and there will be other obvious exceptions). CCTV usually captures a wide-angle, general view and doesn't usually capture audio but, in cases where it does either, it should also be caught by upgraded laws.
The same goes for facial recognition ... which is going to be an obvious feature of smart glasses. Perhaps technology-assisted facial recognition should be a strictly-licensed feature available only to government departments/agencies and certain 'protected establishments' like high-security factories, detention centres and so on. So if a shopping centre wants to implement AI cameras and/or facial recognition, they will need to implement it in such a way that only a licensed private security firm could use it, under strict safeguards and frequent audits, with stiff penalties for any improper use.
Such laws ought to stimulate policy and signage like, "this is a smart glass/recording-free area" and "smart glasses cannot be worn in this building", applicable to wide range of buildings, including shopping centres.
Perhaps we could also see a legally-mandated remote disable function built into smart glasses - where they respond to a broadcast command on entering a recording-free building or area and switch off recording.