HONG KONG — Snapchat and Kik, the messaging services, use bar codes that look like drunken checkerboards to connect people and share information with a snap of their smartphone cameras. Facebook is working on adding the ability to hail rides and make payments within its Messenger app. Facebook and Twitter have begun live-streaming video.
All of these developments have something in common: The technology was first popularized in China.
WeChat and Alipay, two Chinese apps, have long used the bar-codelike symbols — called QR codes — to let people pay for purchases and transfer money. Both let users hail a taxi or order a pizza without switching to another app.
Image: A cellphone user in Shenzhen, China. China’s tech industry has popularized some technologies that are just getting started in the United States. - Credit An Rong Xu
