Our guest app: UNDO

Scan once, always safe!

With UNDO you can simply register with a QR code in a restaurant, shop or at an event. This means that you have complete documentation of your stays that you can understand at any time - and thus not only protect yourself, but also others.

With UNDO you can record in seconds when you have been to a restaurant, visited a shop or attended an event.

This is how easy it is to collect contact data with UNDO:

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