Several applications can benefit from recording information about the places a mobile entity visits and the length of time it spends there (e.g., shoppers, employees, buses, portable equipment, autonomous robots). This paper presents our approach to recording spatio-temporal presence information in a secure and inviolable way using a Distributed Ledger Technology. We implemented this solution as a middleware service that uses Complex Event Processing on smartphones to record beacon-smartphone proximity data in a blockchain efficiently. We have built upon the previous version of our service to include access control to the stored information. We analyzed the impact of this addition on the service’s performance and observed that it introduced very little overhead while significantly increasing user privacy. Furthermore, we compared the effect of using different blockchain technologies on overall service performance and characterized scenarios where using either IoTeX or Ethereum can be suitable for this type of application.

中文翻译：

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基于区块链的移动实体不可侵犯注册服务

一些应用程序可以从记录有关移动实体访问的地点及其在那里停留的时间长度（例如，购物者、员工、公共汽车、便携式设备、自主机器人）的信息中受益。本文介绍了我们使用分布式账本技术以安全且不可侵犯的方式记录时空存在信息的方法。我们将此解决方案实施为中间件服务，该服务使用智能手机上的复杂事件处理来有效地在区块链中记录信标智能手机接近度数据。我们在我们服务的先前版本的基础上构建了对存储信息的访问控制。我们分析了此添加对服务性能的影响，并观察到它引入的开销非常小，同时显着增加了用户隐私。此外，