I was wondering if there exists an app to make your smartphone works like a talkie walkie using Wifi or bluetooth, to avoid cellular network.
Someone pointed out the Serval Project (Idea: Purism should team up with the Serval Project).
However, if I understand correctly their objectives, it is to create a mesh between nearby smartphones, and thus, communications would need to pass through different devices before reaching the intended person.
Even if I’m really interested by this idea, would something simpler be possible to allow two people not too far away from each other to communicate privately without needing a network, whatever it is ?
I don’t know much about electronic, but would it be possible to add in a future version of the librem 5 a chip to use walkie talkie radio frequency, in a secure manner ?