Frequently asked questions

Corona-Warn-App Frequently asked questions

Here you can find the answers to the most frequently asked questions about the Corona-Warn-App.

Where can I find technical help for the Corona-Warn-App?

Why do we need a Corona-Warn-App?

What does the Corona-Warn-App do?

How does the Corona-Warn-App work?

Am I obliged to use the Corona-Warn-App?


Since downloading and using the app is voluntary for citizens, there is no need for statutory regulation of the voluntary use of the app by the population. In the opinion of the Federal Government, compulsory use of the app by employers, shops or other persons would contradict the principles of the General Data Protection Regulation (GDPR). The app is neither intended nor suitable for the purpose of restricting access to facilities.


Why should I use the Corona-Warn-App?

Who is behind the Corona-Warn-App? 

What are the minimum device requirements?

Which criteria are used to assess potential exposures, and what are the different recommendations for action?

When does the Corona-Warn-App actually warn users? 

How does using the Corona-Warn-App affect the battery life and storage space of smartphones?

Why do we need a central server for a distributed solution? Isn’t that a contradiction?

How are data security and data protection ensured for the Corona-Warn-App? 

What personal data does the Corona-Warn-App store?

Can the Corona-Warn-App also be downloaded internationally and used on a cross-border basis? How do you ensure the interoperability of the Corona-Warn-App in Europe?

Will my salary/wages continue to be paid if I stay at home because of a warning by the app?

Is the "increased risk" warning by the Corona-Warn-App enough for sick leave or ordering quarantine?

The glossary PDF, 106 KB, accessible provides explanations for all the terms used in the Corona-Warn-App.

Do you have any questions about using the app or how it works? Please get in touch with us.

For information in further foreign languages please see the website of the Federal Government Commissioner for Integration.