Reticulum is an encryption first networking protocol stack. You could use it over wifi with 2 android devices or over wired ethernet. Any physical comms path is fair game although it hasn't been ported to everything yet. I chose to flash 2 rnodes to try it for 2 reasons.

1 proof that it used the reticulum stack by disabling all other comms between the devices, wifi and LTE off.
2 I wanted to play with my radios because I am a radio nerd.