Daxing Airport Express, also spelled as Tahsing Airport Express of the Beijing Subway is an airport rail link from Caoqiao (located at the Southern 3rd Ring Road) to the Beijing Daxing International Airport. It is colored blue on subway maps. The line opened on September 26, 2019.
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In early 2023, in China, passengers on the Daxing Airport subway line in Beijing capital only need to scan their palms to enter the station and board the train.
To use this technology, passengers need to register and enter "palmprint" before entering the station, and link it to a personal WeChat payment account.
The "palm scan" service uses the "palm and palm vein" recognition technology. This service uses data encryption and data desensitization technology to secure user information.
According to the ecns
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