After the coronavirus outbreak hit Indonesia, charity worker Harry Machmud in May asked volunteers to map hand-washing stations across the archipelago. Hundreds of volunteers who otherwise mark roads and bridges on OpenStreetMap (OSM), a free and editable map of the world built by communities with smartphones and drones, added more than 1,100 hand-washing stations across the country.

The coronavirus pandemic has highlighted many of the world’s inequalities, from quarantine facilities to access to technology. It has also underlined the importance of maps, which remain inaccurate and incomplete in many parts of the world, leaving more than one billion people “invisible”, according to Hot, which aims to map these areas in 94 nations in five years.

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