One of the most impactful technologies for warning people via mobile phones is cell-broadcast. It enables authorities to send targeted alerts to specific at-risk areas without requiring users to download an app. These alerts, triggered by the official authority, appear on all mobile phones in the area with a loud warning sound. Compatible with most devices, cell-broadcast requires no subscription and operates even in silent mode. It reaches visitors and tourists, supports multi-language alerts, and can send millions of messages within seconds, all while avoiding network congestion. Additionally, setting up a cell-broadcast system incurs relatively low costs.
While it seems like a great way of making people safer, only a limited number of countries have, to date, deployed cell-broadcast, and only 45 countries have implemented mobile-based EWS, highlighting a significant global gap in leveraging digital technologies to reach people effectively. One of the main barriers is that it requires governments to work closely with mobile network operators and agree on a clear governance system, and standardized alerting procedures.
The World Risk Poll rightly highlights the opportunities of digital, and the importance of investing in and rebuilding the infrastructure that it relies on. At the same time, it points to the persistent inequalities in access to EWS. Among the least financially resilient (those who could cover basic needs for a week or less if they lost their income), 37% of those who experienced a disaster received no warning, compared with 26% of those who could cover their needs for a month or more. This means that we need more investment in infrastructure and resilient networks. It also means that all communication channels must be used to reach those at risk. ITU promotes a multi-channel approach, which combines all existing channels (TV, sirens, broadcasts, social media, etc.) recognizes the diversity of communities at risk, and helps address inequalities and protect vulnerable populations.
The Resilience in a Changing World report provides important guidance for policymakers and development organizations to deliver targeted interventions, build better climate adaptation strategies and early warning systems. By learning from each other, working together and embracing digital innovations, we can pave the way for a safer and more resilient future for all.