On 16 June 2020, the “Corona-Warn-App” (“the App”) was released by the Federal German government. The tracing App, which uses Bluetooth technology, records which smartphones have come close to each other. If a user has tested positive and has shared this in the App, it will subsequently notify other users that they have been near an infected person. Notified users can then voluntarily be tested, even without symptoms, at the cost of the public health system. Seven days after its release, the App has already been downloaded by 12.2 million people in Germany.

This is the second App released by the government to help fight the pandemic. The first one, called “Corona Data Donation App”, was released in early April and aims at estimating potential COVID-19 infections by analyzing health data from users, collected by a fitness watch and made available to the Robert Koch Institute (a Federal Institute on behalf of the Federal Ministry of Health) through the app1. The two apps are thus complementary, though the second one seems to be much more successful. This first app had about 500,000 users a month after its release.

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