[Wolfstar]

Correct in all respects except one detail. The technique is to keep the perp communicating in hopes of eventually flushing him out of hiding, either through a mistake, or through tracing or some other detection method.

[sweetliberty]

"The technique is to keep the perp communicating in hopes of eventually flushing him out of hiding, either through a mistake, or through tracing or some other detection method."

Yeah, but don't you think he (or they) realizes this too?