I"m an I.T. Engineer.
this is stupid because it would have to work in one of the following ways
- Get the phone manufacturer's to be in in on it and manufacture HARDWARE LEVEL devices that listen to the frequency and everything on your CELL ANTENNA in your phone (note, Your Phone generally has 2 Antenna's, WiFi, Cellular and Bluetooth)
then that device would have to transmit that data to a (Police Designated ) Receiver
DO YOU HAVE ANY IDEA HOW HARD THAT IS TO SETUP, Considering the Load that would be incoming
but again, the phone manufacturer's would have to agree, ....... THEY WON'T
if they were thinking of doing it from the point of view of your internet connection. the Carrier would have to agree.
Again, i see a big issue here, and they probably won't
if they are thinking of Hijacking the connection to listen in, well.
HERE'S THE KICK IN THE TEETH TO THE POLICE
YOU COULD EASILY SWITCH OFF YOU CELL ANTENNA IN SETTINGS
if you did that, (Assuming the cops had a lock on your signal) THEY WOULD NEED TO REGAIN THE LOCK ON YOUR SIGNAL
but all the effort they put in, can simply be brought to a halt by disabling your Cell Connection.
now. this also means you can't call
but by this time, you could also install Network Sniffer Apps that could (once the police traffic is detected) you could block it via it's identifier
so... YEAH.. HEHE
Good luck with that
i can't see this as being a viable option of the police, it's too random
if they wanted to do this
they could just WITH A LOT LESS EFFORT get a court order that demands that the carrier monitors everyone and if something relating to terrorism pops it's head up
they would be ordered to report it
THIS IS A MUCH SIMPLER OPTION
i can't see this Police effort taking off, From a Networking point of view, it would be a nightmare