Even if he is not talking about network, the example he used in github is flawed, of "auto connected devices, based on distance", maybe in US reality, where you have big houses, but ceratinly not in a real world scenario, with thousand of small apartments with everything near. The solution already exists and is not hard. try to register an airtag, or setup a new iphone with the old one and you will se the process is painless, and there is no 3d location involved.