Women in Brussels 'filmed without their knowledge' by men wearing Meta smart glasses
(www.brusselstimes.com)
Snapping a photo or video of your family or a landmark for your personal memories that happens to have some other people in the background is a hell of a lot different than sending a constant stream of everyone you're looking at along with location data to Facebook, Google, the government, and whoever the fuck else. I shouldn't have to explain this to you. And yes if you're going to be uploading someones image online I do think you should have their permission.