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再也不怕假警察，重庆公安局采用区块链技术升级“社区民警智能名片”
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民警信息二维码的背后，是中国电信智能名片提供的技术支持，该方案由一套基于区块链的三级身份认证系统，以及基于微信的名片管理工具组成，在身份防伪和数据安全方面具有业界领先的优势。
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