Nanogram is made for the privacy conscious enthusiast who wants total control of their data. Create a small scale private social media platform for family and friends.
The onion service and web server are hosted directly on your phone via termux.
User access can be granted by generating a magic invite link in the server manger. These are one time use links that allow registration to the service.

Application Demo here
Install Demo here
Source code here


I meant Unix systems were hacked through finger. It may be fixed now and may have never been a problem in Linux.
I am not geeky enough to understand the details. https://spaf.cerias.purdue.edu/tech-reps/823.pdf#page5