I have to admit my naivety on this, but: What exactly is the problem here?<p>Both the airlines and the involved law enforcement have a right or even a duty to know who you are when you are boarding the plane. They also have facial recognition data, either from a passport photo or putting a camera in front of the check-in, and arguably they have a right to that.<p>People walk around with their faces all the time. They post it on social media. Would it be a problem if a security guard lets you through a gate because he recognizes you? Is it more troublesome that all security guards of the airline now can recognize you at the gate?<p>I think we need to be more precise about what exactly is spooking us and why. Using facial recognition for boarding security is not as big as a problem as facial recognition being used for law enforcement or whatever they do in China now. But that's a topic for legislation and regulation. If companies are prohibited from storing personal data without consent, that should be enough to stop almost any legal infringement.<p>If such legislation is impossible, because your government is completely unaccountable, or because companies are unaccountable to such laws, then that is a much bigger problem than the potential for violations of privacy...<p>With regards to privacy I keep coming back to the conclusion that it is more important and effective to improve and enforce regulations than to beat up on particular technologies.