Coronavirus: information for checkers and issuers and technical details on the COVID certificate

Find out here what you need to bear in mind as a checker or issuer of COVID certificates. System integrators will also find technical information.

Information for certificate checkers

COVID Certificate Check app

The COVID Certificate Check app is provided to enable the authenticity and validity of digital COVID certificates to be verified. The presented QR code (on a printout, image or directly from the COVID Certificate app) needs to be scanned using this app. This is the only way that the information it contains can be read and the electronic signature checked. As long as it is correct and compatible, the QR code contains all the necessary information, such as the validity of the certificate. The COVID Certificate Check app contains all the necessary verification keys to ensure that the data stored in the QR code have not been manipulated.

If it is a Swiss COVID certificate or another certificate that is compatible with the EU Digital COVID Certificate, the certificate checker will be shown the following information in the COVID Certificate Check app:

  • Last name
  • First name
  • Date of birth
  • Result of the check (green=valid, red=not valid)

To ensure that the presented QR code actually belongs to the person presenting it, the following must be checked:

  1. The name and date of birth as they appear in the COVID Certificate app must match the details on the presented photo identification (e.g. passport, ID card, driving licence, residence permit, student card or SwissPass).
  2. The photo on the identification document must depict the person presenting it.

The COVID Certificate Check app only uses the data from the QR code for local verification. The data are not stored or transmitted.

Like the COVID Certificate app, the COVID Certificate Check app is available for download free of charge from the Apple App Store, Google Play Store and the Huawei AppGallery.  

Checklist for certificate checkers

The checklist shows what you need in order to check a certificate or an alternative document and what conditions apply for the recognised vaccines.  

Information for certificate issuers

System for issuing COVID certificates

COVID certificates are issued by authorised personnel at medical practices, test centres, hospitals, pharmacies, labs and cantonal authorities. The FOITT (Federal Office of Information Technology, Systems and Telecommunication) is providing these issuers with a system making it as easy and efficient as possible to generate COVID certificates. In addition to a web application, this involves the use of an electronic interface (API) that enables certificates to be issued directly from the cantonal vaccination and test systems as well as from systems at medical practices, hospitals and pharmacies.  

After a negative test result, labs analysing PCR tests will on request send the tested person’s COVID certificate direct to their COVID Certificate app.

Information for system integrators

Are you a system integrator and would like to integrate the creation or checking of COVID certificates into your processes? For this we have provided you with Swiss Covid Certificate API documentation.

To use the API of the FOITT (Federal Office of Information Technology, Systems and Telecommunication) you will need to submit a request.

Please send questions and applications to use the API to the following address:

Technical information

Open source and public security test

The whole COVID certificate system is designed so that no personal data are stored in the Federal Administration’s central systems.

The COVID Certificate System is open source, meaning the source code will be published for anyone to use. A public security test was conducted on 31 May under the lead of the Swiss National Cyber Security Centre (NCSC).

In the course of the test, IT and security specialists outside the project team and the Federal Administration had the opportunity to review the source code and report their findings to the NCSC.  

Further information


All about the COVID-19 vaccination.


Testing strategy, coverage of the costs of tests, overview of the different types of tests, when to get tested, and where to get tested

Last modification 08.10.2021

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Federal Office of Public Health FOPH
Infoline Coronavirus
Tel. +41 58 463 00 00

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