Summary：A man passes a facial recognition machine. Photo: VCGCommuters taking subway Line One in Jinan, East China's ...

A man passes a facial recognition machine. Photo: VCG

 Commuters taking subway Line One in Jinan, East China's Shandong Province, now need only smile (or not) at a new facial recognition system to pass through a turnstile. 

The subway system is the first one to install a 3D facial recognition system that allows passengers to automatically pay their fare with only a glance. 

The system went into operation in early April and passengers who download the required app can pass through a ticket gate in just two seconds by looking at a camera, according to the Jinan Rail Transit Group.

 The system is capable of recognizing a disguise or other tricks and has a failure rate of one in a million, said the transit authority. 

The system allows 30 to 40 passengers to pass through the turnstile every minute, greatly improving the pass-through rate of commuters and easing their way to the platform, said a subway employee.