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Topic subscriptions

Topic subscriptions offer safety-relevant information on a range of topics. As soon as KATWARN has been installed on the smartphone, specific topic subscriptions are available for download. This particular service can be used independently from the location settings.

Depending on the topic, they either run continuously or expire after the event. You can also (de)activate or delete these subs from the KATWARN app menu at any time.

Active topic subscriptions

Messe Berlin

Messe Berlin

Warning Areas:

Messe Berlin trade show buildings and grounds.




Safety/security-relevant information for events held at Messe Berlin – including e.g. service disruptions, very large crowds or blocked entrances/exits.

Messe Berlin has sole responsibility for these warnings.

Further information:

activate the topic

Use your smartphone to scan the matching QR code and then activate the event-based subscription.