Can QR code information be updated?

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App also helps with events

With the event registration, organizers and retailers can use the Corona-Warn-App to create a QR code in which all necessary data about the event are encoded. This includes, for example, the location of the event, date, type of event and, if applicable, the beginning and end. Visitors and guests can check in for the event by scanning the QR code. The check-in is saved locally on your smartphone and automatically deleted after two weeks.

People who later test positive for COVID-19 can share their check-ins together with the diagnosis keys via the app and thus upload them to the server of the Corona warning app. The server then publishes the corresponding check-ins as warnings. These warnings are downloaded regularly and automatically compared with the local check-ins on other users' smartphones. Whether users receive a green or red warning depends on whether their stay overlaps that of an infected person. In the contact diary, users can see whether an encounter with low or high risk is an event-based warning.

Two different event scenarios

There are two different scenarios in which event organizers, retailers and individuals can use the new event registration feature:

  • Scenario 1: Ad-hoc event: An ad-hoc event can be created at short notice by the organizer and has a defined start and end time. These include, for example, private meetings, celebrations or smaller events.
  • Scenario 2: Permanent location: In contrast to the ad hoc event, so-called permanent locations do not have a fixed start and end time. In this case, a QR code is typically made available in a room for a longer period of time. Guests or customers scan this QR code every time they visit. Examples of a permanent location are hairdressers or restaurants.

How do check-in and check-out work?

Users can find the "Check-In" tab in the tab of the Corona warning app. This gives you an overview of your check-ins and allows you to check in or out for an event. To check in, users can scan the relevant QR code. With iOS this works via the camera, with Android devices it depends on the manufacturer whether the smartphone camera can read QR codes. All check-ins can be automatically transferred to the contact diary. Guests and customers can also check out in this area by clicking on “Check out now” under the event. Alternatively, organizers can also set an automatic check-out after a predetermined time. The users then receive a notification that they have been checked out, but can manually adjust the time afterwards using the tab.

This is how a QR code can be created

Organizers or retailers can use the new area on the start screen of the Corona warning app to create a QR code that their visitors and guests can scan. To do this, simply click on "Create QR Code". You can then enter information about the event: After selecting the category (e.g. retail or private party), you can specify a description of the event, the location and the start and end date. The Corona warning app uses this information to create a QR code that can be displayed on the smartphone or printed out and hung up on site.