At the "Blueprint inspired Trail" (https://lu.ma/h9brs3ut) during Ipê City Popup Meeting (https://lu.ma/ipecity) we simulated a group lost in the forest rescue. (just a simulation demo, no one was really lost)
Imagine a group of tourist lost in a new place, with no cellphone coverage, no internet communication, no orientation tools and no outdoor experience...
Then a SAR team (Search And Rescue) is sent tho the scene, to find and recover the lost group. So they assembly a MeshOffGrid repeater at a high sight, using an helicopter, plane, ballon or placing at top of a tree or mountain summit. The main node with the rescue coordinator, and the tracker node with a trained K9 to advanced search in a disaster or remote areas.
The system forms a descentralized MeshOffGrid radio network, considering the main SAR team coordinator, repeaters around the scene to cover eventual shadow radio areas, the tracker to inform precise location of a group or trained K9 (role played by Juno The Jovian Dog: https://www.instagram.com/joviandog/).
All the group can exchange text messages, and can view the position of each node, considering they have a built in GPS, or can connect to the cellphone integrated GPS connected to that local especific radio node.
This way they can send especific equipment to rescue distressed people, or send appropriated tools or vehicles, in order to accomplish the mission successfullly!
The covered area in this simmulation was of 10Km2, but it can be much greater or change according the presented obstacle at the distress scene. Surely a great tool to help in several conditions and uncovered areas.
You can find for more technical info at the official project website: https://MeshOffGrid.org