Don't turn off your phone! Somebody might be listening...

Apparently, the FBI has discovered a new way to "eavesdrop" on criminal's cellphones. Using a specific software (which can be installed remotely or by getting hold of the phone), the FBI can listen to conversations nearby the phone, once this is disconnected.

The software misleads the criminals in thinking that they have just turned off the phone, when in fact the phone is actually "calling" to the FBI.

So, "bad guys", a piece of advise: take off your batteries. That's the only safe option :-)

Source: New Scientist Blog