PARTICIPANTS MUST BRING LAPTOPS. Bringing a mouse or trackball is recommended. (You can make do with a trackpoint or trackpad, but it's less fun.) OpenStreetMap is the Wikipedia of maps - a geographic database that is freely licensed for everyone to use, study, share, and modify. OpenStreetMap can be used to replace Big Tech maps for search and navigation, with the added bonus that users can fix errors and add missing data immediately. It's also used for urban planning, humanitarian missions, and games - anything that requires a machine-readable 2D/3D model of the world. In this workshop,