Their automated system replicates the functions normally performed by customs and immigration officials, and uses biometric face recognition and ePassport RFID registration to process trusted travelers much more rapidly and efficiently than standing in line to be personally checked, especially during peak travel times.

FORBES: Australia's Airports The Latest To Get Smarter Than Ours

The International Civil Aviation Organisation (ICAO), the U.N. body that oversees air travel recognizes facial recognition as its primary biometric standard, with iris and fingerprints accepted as the two optional identifiers.

CNN: Fully biometric airports becoming a reality

In the future, software for voice and facial recognition will surpass all the current biometric tests in terms of accuracy and ease of use.

WSJ: Eric Schmidt and Jared Cohen: The Dark Side of the Digital Revolution

In fact, it is an almost certainty that within the next few years, three biometric options will become standard features in every new phone: a fingerprint scanner built into the screen, facial recognition powered by high-definition cameras, and voice recognition based off a large collection of your vocal samples.

FORBES: Why Your Next Phone Will Include Fingerprint, Facial, and Voice Recognition