Smart glasses are obviously a massive security threat for industrial espionage. You can ask people to keep their phones with security. Getting people to switch to contacts out of the blue, is much more difficult.

James Bond's job is trivial with these. Elon Musk would lose his legs, if his nation-state competitors (whom probably build these glasses) walked into SpaceX and copy pasted the billion dollar plans to his rockets.

American tech is the leakiest abstraction.

If a President's daughter is caught doing something diplomatically controversial with these (or caught because of these)... they won't last long!