In my experiments a few years back: Off in control center still transmits a static UUID every second and changes the UUID about every 12-24 hours. It only stopped "beaconing" after going into settings and turning bluetooth of there. I used hcitool -lescan on a pi to find this out.
I was interested and hit the friction twice, after making an account, It wouldn't accept eagle files or just the raw gerbers. I know it's older but even sparkfun and adafruit designs are in this format.
Also it was fun to have the "invisible" timers placed near the control they worked with. Timer that updates the listbox with serial ports? It's over by the listbox and where is the code for that timer? it's in the timer, double click it!
Sim City on SNES felt like it had a soul. The music was fantastic. I was never great at it but the slow pace was super cozy to let play in the background.