Jet Blue using facial recognition to verify fliers without their consent

This is the first I’ve heard of this. Jet Blue claims you can “opt out”, but seems as though fliers were never informed of it in the first place…

I just boarded an international @JetBlue flight. Instead of scanning my boarding pass or handing over my passport, I looked into a camera before being allowed down the jet bridge. Did facial recognition replace boarding passes, unbeknownst to me? Did I consent to this?

— MacKenzie Fegan (@mackenzief) April 17, 2019