Computer Engineering and Applications ›› 2021, Vol. 57 ›› Issue (9): 68-80.DOI: 10.3778/j.issn.1002-8331.2101-0199

Previous Articles     Next Articles

Survey of Contact Tracking System in Epidemic Environments

LI Chaoqun, CHEN Zhigang, SONG Xinxia, ZHOU Yunhui   

  1. 1.College of Information and Intelligent Engineering, Zhejiang Wanli University, Ningbo, Zhejiang 315100, China
    2.College of Basic, Zhejiang Wanli University, Ningbo, Zhejiang 315100, China
    3.College of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Online:2021-05-01 Published:2021-04-29



  1. 1.浙江万里学院 信息与智能工程学院,浙江 宁波 315100
    2.浙江万里学院 基础学院,浙江 宁波 315100
    3.北京科技大学 计算机与通信工程学院,北京 100083


With the spread of COVID-19, contact tracking systems have become an important tool for containing the spread of the disease. A contact tracking system includes tracking, monitoring and other functions. It mainly uses smart devices, such as mobile phones, to identify the persons who have contacted with infected persons through technological means and to inform them whether isolation and quarantine are needed. Based on this method, individuals with initial symptoms can be isolated from the population, therefore, it effectively reduces the spread of the virus. This paper provides a survey of the existing contact tracking systems. Artificial contact tracking and automatic contact tracking are studied to clarify the disadvantages of artificial contact tracking and the advantages of automatic contact tracking. The principle of centralized contact tracking systems and decentralized contact tracking systems is systematically expounded, and the difference between centralized and decentralized systems are compared. The Global Positioning System, Bluetooth Low Energy and cryptography technology used in the contact tracking systems are expounded and the characteristics of each system are analyzed to provide a direction for the development of contact tracking systems.

Key words: automatic contact tracking, bluetooth low energy technology, centralization, decentralization



关键词: 自动接触人跟踪, 蓝牙低功耗技术, 中心化, 去中心化