How does eRouška protect you and your surroundings?

eRouška is part of the Smart Quarantine (Chytrá karanténa) concept of the Ministry of Health of the Czech Republic.

If you encountered an infected person

If you meet someone who is later tested positive for COVID-19, the application will display an anonymous warning that you are in risk (Android, iOS), and recommends further steps. Maybe you were sitting near that person in a restaurant and do not know each other. Without eRouška, it would be impossible to warn you.

If you get infected

If you happen to be positive with COVID-19, the public health officer will send you a unique SMS code which will allow you to send your anonymous identifiers (keys) to other users's eRouška apps. In each of them, an algorithm evaluates whether the encounter was risky. If it was, they will receive a notification. Thanks to that, it is possible to warn people who you do not know personally – maybe you were only on the same bus. But they can then protect their family.

No one will know whose device sent the notification. See how eRouška works in a simple infographics.

eRouška protects
your privacy

How is eRouška different from other similar applications?

eRouška uses the same Bluetooth technology that most smart mobile devices in the Czech Republic employ as well. Therefore, it works inside buildings, underground parking lots or the Metro. The application does not collect your location data (such as GPS). It anonymously evaluates your encounters with other app users. It is the only Czech app that is allowed to use the Apple/Google protocol which ensures the app's security on Android and iOS devices, and decreases energy consumption.

Would the other eRouška users learn my identity when I get infected?

No. If you are tested positive, you can send only anonymised identifiers (keys) from your device with eRouška. These identifiers are used for evaluation of a risky encounter. The application does not identify you personally, and minimises the processing of personal data. You can find more information about personal data processing at in Terms and conditions. The only person who can identify you is a public health officer who will interview you. However, they are obliged to be discrete and protect your personal data.

Does it matter if I join and install the app? Does it make a difference?

The more users of eRouška, the stronger our network. It will protect us and notify us about the risk of infection. The biggest advantage of eRouška is that it can notify you quickly, which protects you and your family.

Is my data protected? Who is the authority behind eRouška?

eRouška 1.0 underwent by several independent audits which confirmed that its source code is secure and complies with the principles of personal data processing. The new eRouška will undergo such audits soon. The app is managed by Ministry of Health along with by National Agency for Communication and Information Technologies.

Who designed and developed eRouška?

Many volunteers from the original team continue to work on the new version 2.0 based on Apple/Google protocol in the development team.

Do you have any further questions?

Are you interested in how eRouška works and on which phones? Or maybe what data you share with eRouška?