PrivyTRAC: Privacy and Security Preserving Contact Tracing System
Ssu-Hsin Yu

TL;DR
PrivyTRAC is a privacy-preserving contact tracing system that enhances accuracy by considering environmental virus effects and user privacy, outperforming traditional proximity-based methods in infection risk estimation.
Contribution
It introduces a novel privacy-preserving contact tracing system that incorporates environmental virus effects and anonymized risk maps for improved accuracy.
Findings
PrivyTRAC reduces false positives compared to proximity methods.
It effectively preserves user privacy without transmitting personal data.
Incorporating test results further improves infection risk estimation.
Abstract
Smartphone location-based methods have been proposed and implemented as an effective alternative to traditional labor intensive contact tracing methods. However, there are serious privacy and security concerns that may impede wide-spread adoption in many societies. Furthermore, these methods rely solely on proximity to patients, based on Bluetooth or GPS signal for example, ignoring lingering effects of virus, including COVID-19, present in the environment. This results in inaccurate risk assessment and incomplete contact tracing. A new system concept, called PrivyTRAC, preserves user privacy, increases security and improves accuracy of smartphone contact tracing. PrivyTRAC enhances users' and patients' privacy by letting users conduct self-evaluation based on the risk maps download to their smartphones. No user information is transmitted to external locations or devices, and no…
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Taxonomy
TopicsCOVID-19 Digital Contact Tracing · Data-Driven Disease Surveillance · Mobile Crowdsensing and Crowdsourcing
