Facial recognition has been heralded a key innovation in surveillance and security, but the technology may be coming to an airport near you in a bid to cut queues and speed up passenger travel.

Its detractors warn that facial recognition systems could wind up going full Skynet, resulting in some kind of robo-apocalypse even Arnie can’t save us from. But it’s supporters say that it could transform travel by allaying security concerns while making for a much smoother passenger experience.

Here are some of the airports having a run at the futuristic tech in a bid to banish passenger backlogs:

Trendsetting Singapore

Singapore was among the first in the world to pioneer such technology to shuttle passengers through its airports more swiftly. Changi Airport launched its facial recognition support systems in late 2017, using biometric technology to free up passenger queues from check-in, through to immigrant checks and boarding.

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Taking off in the US

The US opened its first biometric terminal in December 2017 at Hartsfield-Jackson Atlanta International Airport in Georgia. The airport plays a huge role in US flights and international transfers through North America, and is the busiest in the US in terms of passenger numbers.

Biometric e-gates have since opened in LAX in California, New York’s JFK Airport and Orlando International Airport in Florida, and more are being unrolled at other sites across the country.

China’s Chengdu

Chengdu Shuangliu International Airport in China uses facial recognition to provide travel information to passengers after scanning their features, to the surprise of some who pass through the facility.

Wow! China Airport face recognition systems to help you check your flight status and find the way to your gate. Note I did not input anything, it accurately identified my full flight information from my face! pic.twitter.com/5ASdrwA7wj — Matthew Brennan (@mbrennanchina) March 24, 2019

Tokyo 2020

Japan’s busy Narita Airport near Tokyo plans to become the nation’s first to use passengers’ own faces as their boarding cards. The move is said to be part of Japan’s preparations for the 2020 Summer Olympics and Paralympics to help ease queues at the airport as sports fans flock in.

Although travelers will still need their passports for clearing immigration, they can use facial recognition to check themselves and their bags in for their flights, and to get through security checks.

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Heathrow hub

Heathrow Airport (the UK’s biggest) says it’s going to use facial recognition for passengers instead of boarding cards starting this summer. The airport already uses facial recognition in its security systems and is currently rolling out the tech to ease passenger congestion.

Last summer saw huge queues at the airport, with some unfortunate travelers spending more than two-and-a-half hours waiting to get through border controls.

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