Paying with his/her fingerprint is convenient: no need to carry money (which is an advantage for elderly)...
There are two main sections:
In USA, Pay By Touch has been one of the very first to propose a system based on fingerprints, and as of end 2006, already 3 millions individuals were enrolled. But the system died in 2006.
(2007 Oct): Payment with the fingerprint is starting in Shanghai.
New initiatives are launched using the fingerprint sensor of smartphones:
(2015 Mar) Alibaba tests facial recognition
Users of the e-commerce giant's mobile payment systems could soon be able
to pay by scanning their face with a smartphone, after Alibaba's boss teased
the new technology.
The service called "Smile To Pay" is currently in beta mode, but was shown off by Alibaba CEO Jack Ma during his keynote speech at the CeBit tech trade fair.
(2017 Sep) Alipay Launches ‘Smile to Pay’ for Commercial Use in China
Alipay has launched its new facial-recognition payments technology for commercial use,
Ant Financial Services Group said Friday.
“Smile to Pay,” the first service of its type, debuted at a KFC’s new, healthy-food concept restaurant, called KPRO, in Hangzhou. With it, Alipay users can authenticate their payments through a combination of facial scanning and inputting their mobile phone numbers. That means they won’t need to break out their wallets—or even smartphones—anymore.
Ant Financial said the Smile to Pay technology has reached a level of accuracy and security that should put Alipay users at ease. The multistep process of one to two seconds of facial scanning uses a 3D camera and a “live-ness detection algorithm” to guarantee a user’s identity. For example, the algorithm can detect shadows and other features that can only come from living beings, thereby blocking photos or video that might be used by someone trying to hijack a person’s Alipay account. The addition of the phone-number check “further ensures the security of transactions,” Ant Financial said.
(2017 Aug) Suning opens unmanned store with face recognizing paying system in E China
Customers purchase goods at an unmanned store of China's e-commerce platform Suning Appliance in Nanjing, capital of east China's Jiangsu Province, Aug. 28, 2017. The unmanned store, which recognizes customers' identity through face recognition system, is able to automatically collect money from customers when they take commodities to pass through a payment gateway. The money collection is realized with Suning-bolstered financial system.