The Supreme Court of Canada ruled several years ago that Canadians have no privacy outside their domicile.
"Big Brother" is already tracking you. Google tracks millions of customers 24/7.
Cameras are at intersections, malls, stores, theatres et al. Many communities in Canada, the UK and America have their CCTV system configured to track a person from camera to camera in the case of a fleeing suspect.
This article, although obviously biased, provides false information.
"Facial recognition has come under intense scrutiny in recent years. Experts have warned facial data, once collected, could lead to the permanent loss of a person’s anonymity in public. Much like a fingerprint, a face is highly identifiable and can’t easily be changed."
Facial recognition has aided law enforcement, Border Securities and Canada's spy agency, CSIS.
Canada's Supreme Court has ruled that notifying people is not required.
"The CBSA did not put up signage within Pearson airport informing travellers the technology was being used, the privacy assessment says, as doing so could have led to “inaccurate information,” defeated the purpose of collecting the information or prejudiced the information being collected."