GB/T 31778-2015
ActiveCity union card of digital city—General technology requirements
数字城市一卡通互联互通 通用技术要求
Application Summary AI generated
This standard specifies the general technical requirements for city union cards used in digital city systems, including card architecture, data formats, security protocols, and interoperability specifications. It is applied in the development and deployment of multi-purpose smart cards for public transportation, municipal services, and small-value payments across different cities in China. The standard ensures that city union cards from various regions can be used interchangeably within the national digital city network.
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