Using apps in the context of Covid-19 is useful to the general public to help people to report their symptoms and to learn about the virus and the health response. Apps are now being explored to trace contacts through interaction and proximity analysis. They are also being explored as quarantining enforcement tools, monitoring location and interactions. The apps can help you report, generate data without your involvement, or lift data from your device. They can store the data locally or send the data to servers. And they can leak data to analytics firms and social media platforms.”]
Source: https://privacyinternational.org/examples/apps-and-covid-19