Is there a way to get list of connected devices?

[omer-re]

means MAC and nickname of the currently connected devices
and/or
all familiar devices that have been paired in the past?

[Goblenus]

Everything is possible, but now it's not made.

I got 2 tasks from your request:

1. Need to make a method for getting MAC and nickname of the currently connected devices
2. Need to make storage (db) for previously connected devices

The fist one is not hard, but for the second I need more context how do you want to use it.