I agree that the current use case is small, but it can be seen as a crucible for learning about fully decentralised networking.
Technologies like RINA (more of a meta-technology as it is an architecture framework) would allow us to build bridges between these “islands of connectedness” in new ways that can be secured and scaled better than in the past. Furthermore, the current cloud model seems grossly mismatched to the needs for local and portable identity storage.
Today's Internet is the “MS-DOS of packet data”, and it is these corner cases that are where the “Windows” will emerge from.
This could be a user interface to the Guardian Avatar. We need to be able to communicate our (social, ethical, economic) intent to machines that then translate that into myriad small choices in the world. A “digital doppelgänger' has to “speak human”. Likely worthy of investigation.
It uses BLE which is Bluetooth to transfer data. And is highly functional in a densely populated area. The range of BLE is about 400m if its BLE 5.
This scuttlebut is considered the ultimate in decentralized Peer to Peer (P2P) technologies. BLE is the best tech to create mesh networks. This is the type of app spies would use, you need to be physically near your conversation partner, at the same time the biggest plus and min.
In short: It is valuable to have them onboard but their use case is still microscopic small.