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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. 香港——在通讯应用Snapchat和Kik里，人们用仿佛毫无章法的棋盘一样的条码建立联系，用智能手机拍照分享信息。Facebook打算在其Messenger应用内增加叫车及付款功能。Facebook和Twitter已经开始提供视频直播。 All of these developments have something in common: The technology was first popularized in China. 所有这些新动向都有一个共同点：相关技术最初是在中国流行起来的。 | 
