I have been tasked to build a software that will prevent customers from making calls in banks as my final project. I need help.

Question

Banking software
https://www.sololearn.com/discuss/1524888/?ref=app

Answer 1

Make a circuit that transmits radio waves at 1900Mhz frequency.
It will jam phone calls.
Not possible otherwise.

Answer 2

That means the software will need an internet connection. What about the situation in which there is no internet connection as it can happen in developing countries?

Answer 3

Still thinking about that