Biometric security: Sydney Airport and Qantas to trial facial recognition tech

Privacy experts have urged caution about widespread adoption of biometric security, as Sydney Airport announced a trial of facial recognition technology with Qantas on Thursday.

The airport and airline will trial the first stage of "couch-to-gate" biometrics, which could eventually mean that passengers will be able to go through most stages of the airport using only their face as a means of identification, cutting down queue times.