Surveillance in context of who ? : people who wear the glasses or the ones they are looking at ! .. For the first category .. both are same . .. Meta can't survail you more if you are wearing glasses or carrying the phone .. cuz they anyway know everything about you :-) Yes .. now you can be a ninja agent with a blink of an eye you can record your Barista , postman , teacher and people passing by 😭😭😭 O btw ... You support smartphones and care for surveillance ! That is a bit odd ..