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Learn about receiving weather and emergency alerts through Free and Open Source Software (FOSS) in this 38-minute conference talk from the 38th Chaos Communication Congress. Explore how the July 2021 flood disaster highlighted the critical importance of effective disaster warning distribution, and discover the development of FOSS alternatives to proprietary warning apps like NINA and KATWARN. Understand the implementation of Cell-Broadcast in Germany, the Common Alerting Protocol (CAP), and UnifiedPush as a free alternative to proprietary push notifications. Examine how a custom aggregation server collects warning messages from 100 countries and informs clients about events in relevant areas. Gain insights into CAP functionality, its global implementation, and interesting observations made during development from the creators of FOSSWarn and the FOSS Public Alert Server.
