Digital contact tracing: large-scale geolocation data as an alternative to bluetooth-based Apps failure Articles uri icon

publication date

  • May 2021

start page

  • 1

end page

  • 11


  • 9, 1093


  • 10

Electronic International Standard Serial Number (EISSN)

  • 2079-9292


  • The currently deployed contact-tracing mobile apps have failed as an efficient solution in the context of the COVID-19 pandemic. None of them have managed to attract the number of active users required to achieve efficient operation. This urges the research community to re-open the debate and explore new avenues to lead to efficient contact-tracing solutions. In this paper, we contribute to this debate with an alternative contact-tracing solution that leverages the already available geolocation information owned by BigTech companies that have large penetration rates in most of the countries adopting contact-tracing mobile apps. Our solution provides sufficient privacy guarantees to protect the identity of infected users as well as to preclude Health Authorities from obtaining the contact graph from individuals.


  • Industrial Engineering


  • covid-19; contact tracing; facebook; google; geolocation; privacy