Regarding reliability, in China you can pay with just your face with Alipay in many convenience stores, supermarkets, and vending machines. End-to-end transacti

Regarding reliability, in China you can pay with just your face with Alipay in many convenience stores, supermarkets, and vending machines. End-to-end transaction fees are usually within 0.1%, which puts a ceiling on the failure rate. https://asia.nikkei.com/Business/China-tech/Pay-with-your-face-100m-Chinese-switch-from-smartphones https://asia.nikkei.com/Business/China-tech/Pay-with-your-fa...