This also worked until recently on telegram, it's so novel to me, what was a huge deal with the cell phone AMPS/TDMA days and how Kevin Mitnick was caught, is possible now, with someone bored and a day to kill with a waymark and working backwards to try to isolate.

I just find it so fascinating, what was only possible by telecom/nation states now the average poweruser can do if they really pleased. Then again, API walk, race attacks and such, aren't the average power user, right?