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Contact tracing has emerged as one of the main mitigation strategies to prevent the spread of pandemics such as COVID-19. Recently, several efforts have been initiated to track individuals, their movements, and interactions using…

Google and Apple have jointly provided an API for exposure notification in order to implement decentralized contract tracing apps using Bluetooth Low Energy, the so-called "Google/Apple Proposal", which we abbreviate by "GAP". We…

Contact tracing is widely considered as an effective procedure in the fight against epidemic diseases. However, one of the challenges for technology based contact tracing is the high number of false positives, questioning its…

Computers and Society · Computer Science 2020-07-28 Khuong An Nguyen , Zhiyuan Luo , Chris Watkins

Contact tracing promises to help fight the spread of Covid-19 via an early detection of possible contagion events. To this end, most existing solutions share the following architecture: smartphones continuously broadcast random beacons that…

Networking and Internet Architecture · Computer Science 2021-06-15 Pietro Tedeschi , Spiridon Bakiras , Roberto Di Pietro

In a world where data is the new currency, wearable health devices offer unprecedented insights into daily life, continuously monitoring vital signs and metrics. However, this convenience raises privacy concerns, as these devices collect…

Cryptography and Security · Computer Science 2025-12-04 Karthik Barma

With the onset of COVID-19, governments worldwide planned to develop and deploy contact tracing (CT) apps to help speed up the contact tracing process. However, experts raised concerns about the long-term privacy and security implications…

Cryptography and Security · Computer Science 2022-07-21 Joydeep Mitra

Many proximity-based tracing (PCT) protocols have been proposed and deployed to combat the spreading of COVID-19. In this paper, we take a systematic approach to analyze PCT protocols. We identify a list of desired properties of a contact…

Computers and Society · Computer Science 2020-12-18 Fabrizio Cicala , Weicheng Wang , Tianhao Wang , Ninghui Li , Elisa Bertino , Faming Liang , Yang Yang

The recent COVID-19 pandemic underscores the significance of early-stage non-pharmacological intervention strategies. The widespread use of masks and the systematic implementation of contact tracing strategies provide a potentially equally…

Populations and Evolution · Quantitative Biology 2024-09-02 A. P. Muntoni , F. Mazza , A. Braunstein , G. Catania , L. Dall'Asta

The COVID-19 pandemic has fueled the development of smartphone applications to assist disease management. Many "corona apps" require widespread adoption to be effective, which has sparked public debates about the privacy, security, and…

Previous contact tracing systems required the users to perform many manual actions, such as installing smartphone applications, joining wireless networks, or carrying custom user devices. This increases the barrier to entry and lowers the…

Signal Processing · Electrical Eng. & Systems 2022-11-07 Brosnan Yuen , Yifeng Bie , Duncan Cairns , Geoffrey Harper , Jason Xu , Charles Chang , Xiaodai Dong , Tao Lu

Location-based services (LBSs) in vehicular ad hoc networks (VANETs) offer users numerous conveniences. However, the extensive use of LBSs raises concerns about the privacy of users' trajectories, as adversaries can exploit temporal…

Cryptography and Security · Computer Science 2024-01-23 Mingge Cao , Haopeng Zhu , Minghui Min , Yulu Li , Shiyin Li , Hongliang Zhang , Zhu Han

Due to the COVID 19 pandemic, smartphone-based proximity tracing systems became of utmost interest. Many of these systems use BLE signals to estimate the distance between two persons. The quality of this method depends on many factors and,…

Networking and Internet Architecture · Computer Science 2024-10-28 Eric Lanfer , Thomas Hänel , Roland van Rijswijk-Deij , Nils Aschenbruck

Contact tracing systems control the spread of disease by discovering the set of people an infectious individual has come into contact with. Students are often mobile and sociable and therefore can contribute to the spread of disease.…

Human-Computer Interaction · Computer Science 2022-01-24 Dave Murray-Rust , Luis Soares , Katya Gorkovenko , John Rooksby

Epidemics like the recent COVID-19 require proactive contact tracing and epidemiological analysis to predict and subsequently contain infection transmissions. The proactive measures require large scale data collection, which simultaneously…

Since the start of the COVID-19 pandemic, technology enthusiasts have pushed for digital contact tracing as a critical tool for breaking the COVID-19 transmission chains. Motivated by this push, many countries and companies have created…

Computers and Society · Computer Science 2020-12-14 Amee Trivedi , Deepak Vasisht

Google and Apple jointly introduced a digital contact tracing technology and an API called "exposure notification," to help health organizations and governments with contact tracing. The technology and its interplay with security and…

Cryptography and Security · Computer Science 2021-12-17 Salman Ahmed , Ya Xiao , Taejoong , Chung , Carol Fung , Moti Yung , Danfeng , Yao

FemTech, a rising trend in mobile apps, empowers women to digitally manage their health and family planning. However, privacy and security vulnerabilities in period-tracking and fertility-monitoring apps present significant risks, such as…

Cryptography and Security · Computer Science 2024-04-10 Shalini Saini , Nitesh Saxena

The goal of this paper is to shed some light on the usefulness of a contact tracing smartphone app for the containment of the COVID-19 pandemic. We review the basics of contact tracing during the spread of a virus, we contextualize the…

Computers and Society · Computer Science 2020-07-30 Leonardo Maccari , Valeria Cagno

To slow down the spread of COVID-19, governments around the world are trying to identify infected people and to contain the virus by enforcing isolation and quarantine. However, it is difficult to trace people who came into contact with an…

Cryptography and Security · Computer Science 2020-06-25 Md Whaiduzzaman , Md. Razon Hossain , Ahmedur Rahman Shovon , Shanto Roy , Aron Laszka , Rajkumar Buyya , Alistair Barros

The COVID-19 pandemic has prompted technological measures to control the spread of the disease. Private contact tracing (PCT) is one of the promising techniques for the purpose. However, the recently proposed Bluetooth-based PCT has several…

Cryptography and Security · Computer Science 2020-11-05 Fumiyuki Kato , Yang Cao , Masatoshi Yoshikawa