I was at London's Gatwick Airport last week, where facial recognition was being trialed at the boarding gate for my flight. On the way, multiple, large signs a

I was at London's Gatwick Airport last week, where facial recognition was being trialed at the boarding gate for my flight. On the way, multiple, large signs announced the trial. At the gate itself, there was a prominent notice addressing travelers' privacy (and other) concerns - several paragraphs of large text. It was clearly mentioned that, for people who were reluctant to use the new technology, there would be attendants available to process them in the usual way. I was quite impressed. However, the trial was cancelled, and the machines still retained their plastic wrapping. Oh well.