Besides social distancing and vaccines, another tool in the fight against COVID-19 has been contact tracing, and with the COVID-19 pandemic, contact tracing was modernised, using mobile apps, bluetooth, WiFi, and GPS.

Roshan Kanesan speaks to Professor Susan Landau, Professor of Cyber-Security at Tufts University and author of People Count: Contact-tracing Apps and Public Health, about the various systems in use, the privacy concerns that arise, and more.

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