ChatterBox UI / Prototype Updates - Building an Encrypted LoRa Off-Grid Communicator

ChatterBox is an experimental DIY-type device, which is designed to allow secure off-grid text-based and binary communication. I am currently building the system. This video demonstrates some of the UI improvemenets I've made over the past week.
Other than the 3d-printed cases, these devices can be completely built using fairly inexpensive components from Amazon, Adafruit, and/or Arduino. My intent is for people to be able to build these for themselves with some basic soldering skills. Alternatively, I may do a large production of the final devices using a kickstarter or partnering with a manufaturer, I have not yet decided.
There is no operating system, this is my code running directly on the device hardware, so these should be immune to any sort of internet/power/telecom outages, cyberattacks, kill switches, etc.
The latest build process and documentation is available at:
www.chatters.io