How to use the two-dimensional code technology to control the two-dimensional code security?
不用自主的二维码技术怎么把控二维码的安全？
If the two-dimensional code is stuck, be sure to raise vigilance.
如果二维码是粘上去的，务必提高警惕。
Executive Secretary General of China's two-dimensional code industry alliance Zhang Yeping said.
中国二维码产业联盟执行秘书长张也平说。
I heard that the province to fully change the two-dimensional code number?
问：听说全省要全面换发二维码门牌了？
I heard that the province to fully change the two-dimensional code number?
问：听说全省要全面换发二维码门牌了？
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