The protective measures taken in recent weeks have helped blunt the first wave of COVID-19 infections. A tracing app paired with a selective epidemiological assessment remains a key digital component of the campaign to control and contain the current coronavirus pandemic. The Fraunhofer-Gesellschaft is sharing its developments towards a tracing app at the federal level to contribute to a decentralized solution. These components will enable users to volunteer their data for researchers to investigate the pandemic directly.